Closed Core Distribution Transformer Market - Global Industry Size, Share, Trends, Opportunity, and Forecast, Segmented, By Cooling Type (Air-Cooled, Oil-Cooled, Dry Type), By Power Rating (Up to 100 kVA, 101 kVA to 500 kVA, 501 kVA to 1000 kVA, Above 1000 kVA), By Application (Commercial Buildings, Industrial Facilities, Utilities, Renewable Energy Systems), By Region, By Competition, 2020-2030F

Market Overview

The Closed Core Distribution Transformer Market was valued at USD 7.33 Billion in 2024 and is expected to reach USD 9.18 Billion by 2030 with a CAGR of 3.67%. The Closed Core Distribution Transformer Market refers to the segment of the electrical transformer industry focused on the design, production, and deployment of distribution transformers featuring a closed magnetic core configuration. These transformers are used primarily in the final stage of power distribution networks to reduce high-voltage electricity to a lower voltage suitable for use in residential, commercial, and light industrial applications. Closed core distribution transformers are distinguished by their continuous magnetic circuit, which efficiently directs magnetic flux and minimizes core losses, improving overall energy efficiency and performance.

Key Market Drivers

Expanding Urbanization and Infrastructure Development

Rapid urbanization and infrastructure development across both developed and emerging economies are significantly driving the growth of the Closed Core Distribution Transformer Market. As cities expand and populations concentrate in urban areas, the demand for reliable and efficient electricity distribution becomes increasingly critical. Closed core distribution transformers are essential for ensuring stable voltage delivery across short to medium distances within densely populated residential and commercial areas. Their compact design, reduced magnetic losses, and enhanced energy efficiency make them ideal for deployment in urban distribution networks where space constraints and operational efficiency are key considerations. With governments prioritizing the expansion of smart cities, real estate development, and modern public infrastructure, the need for advanced distribution solutions like closed core transformers has surged.

The closed core configuration offers superior energy containment, which minimizes flux leakage and improves overall performance. These transformers are widely deployed in metro rail projects, hospitals, educational institutions, and commercial complexes, all of which require dependable power delivery. Additionally, the global emphasis on resilient and scalable power distribution infrastructure, especially in developing economies undergoing industrial and infrastructural transformation, has resulted in a consistent increase in installations of closed core distribution transformers. These units are particularly well-suited for managing the fluctuating power loads typical of fast-growing urban environments, further reinforcing their value proposition in infrastructure-centric development. Over 55% of the world’s population currently lives in urban areas, with this figure expected to reach nearly 70% by 2050. Global infrastructure investment needs are projected to exceed USD 90 trillion by 2040 to support growing urban populations and modernize aging systems. Emerging economies account for more than 60% of current urban infrastructure expansion, particularly in Asia and Africa. Smart city initiatives are growing at a CAGR of over 20%, integrating digital infrastructure into urban planning to enhance efficiency and sustainability. Urban transportation infrastructure projects, including metro rail, BRT systems, and electric vehicle networks, are receiving increasing public and private investment worldwide. Housing and urban construction sectors contribute nearly 40% of total global infrastructure spending, driven by the need for affordable and high-density living solutions.

Rising Demand for Energy Efficiency and Loss Reduction in Power Distribution

Energy efficiency is becoming a primary objective for utilities and policymakers worldwide, placing the Closed Core Distribution Transformer Market in a favorable position. These transformers offer enhanced efficiency by minimizing core losses through optimized magnetic circuit design, which helps reduce the energy lost during transmission and distribution. In power distribution networks, even marginal efficiency improvements can translate into substantial cost savings and carbon footprint reductions over time. Closed core designs also enable lower noise operation, less heat generation, and higher operational reliability, making them attractive for deployment in environments where sustainability and low environmental impact are key priorities. As global electricity demand continues to rise, utilities are under increasing pressure to optimize their infrastructure while adhering to regulatory efficiency benchmarks.

Closed core transformers are being increasingly specified in government and commercial procurement tenders aimed at modernizing outdated grid components with low-loss alternatives. They also align with global decarbonization goals, as they help reduce indirect emissions associated with energy transmission. The rising adoption of green building standards and eco-friendly certifications is encouraging builders and infrastructure developers to use closed core systems that support long-term energy savings. This focus on energy efficiency is expected to remain a key market driver as nations strive to balance rising energy consumption with sustainability mandates.

Electricity transmission and distribution losses account for approximately 8% of total electricity generated globally. Deploying energy-efficient closed core distribution transformers can significantly reduce these losses, contributing to billions of kilowatt-hours in energy savings annually and reducing associated greenhouse gas emissions.

Integration of Distributed Energy Resources and Decentralized Grid Systems

The increasing integration of distributed energy resources, such as rooftop solar, wind turbines, and battery energy storage systems, is a significant driver for the Closed Core Distribution Transformer Market. These decentralized energy systems require highly reliable and efficient distribution infrastructure to manage bidirectional power flows and maintain grid stability. Closed core distribution transformers are particularly well-suited for these applications due to their superior voltage regulation, magnetic flux control, and compact design. As power generation shifts from large centralized plants to localized sources, the role of distribution transformers becomes more critical in balancing loads and enabling smooth energy transitions at the community and neighborhood level.

In rural electrification programs, industrial microgrids, and off-grid renewable energy systems, closed core transformers ensure efficient and reliable power transfer. They help support dynamic load conditions and variable generation profiles, which are characteristic of renewable sources. Governments and energy developers are increasingly deploying these transformers in remote and semi-urban regions where expanding centralized grid infrastructure is either not feasible or economically viable. This market trend aligns with the broader global movement toward grid decentralization, resilience, and energy democratization. As a result, the demand for flexible and efficient transformer solutions is expected to grow in tandem with distributed energy adoption.

Globally, more than 330 gigawatts of distributed solar photovoltaic capacity had been installed by the end of 2023, with substantial annual growth projected through the decade. The rise of distributed energy systems is directly increasing the need for efficient and compact closed core distribution transformers to support reliable power delivery in decentralized grids.

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Key Market Challenges

High Initial Investment and Cost Sensitivity in Emerging Markets

One of the primary challenges confronting the Closed Core Distribution Transformer Market is the high initial capital investment required for procurement, installation, and system integration. Compared to conventional transformer configurations, closed core transformers generally involve more intricate engineering, premium core materials, and advanced manufacturing techniques, all of which contribute to higher upfront costs. While these transformers offer long-term benefits through improved efficiency and lower maintenance, many power utilities and infrastructure developers, especially in emerging markets, are often constrained by limited budgets or short investment timelines. This cost sensitivity becomes a major barrier to adoption in regions where infrastructure development is urgently needed but funding remains scarce.

Moreover, utilities in developing economies are frequently reliant on public funding or international aid, both of which are subject to bureaucratic delays and political shifts that can stall deployment plans. The higher procurement and implementation costs associated with closed core transformers can lead decision-makers to opt for lower-cost alternatives, even if such choices compromise long-term efficiency and reliability. Additionally, uncertainty in raw material prices, especially for core steel and copper, further compounds the investment challenge, making project budgeting and financial planning more difficult. As a result, despite the technical and operational advantages of closed core transformers, their adoption in price-sensitive markets can be limited, delaying broader modernization of distribution infrastructure.

Complexity of Integration into Aging and Diverse Grid Infrastructure

The integration of closed core distribution transformers into aging and heterogeneous power grids poses another substantial challenge to market growth. Many existing power distribution networks, particularly in North America, Europe, and parts of Asia, consist of outdated infrastructure built using varied engineering standards, voltage classes, and design practices. Retrofitting these grids with modern closed core transformers often requires customized solutions, additional auxiliary equipment, and detailed engineering assessments to ensure compatibility and safety. This complexity can increase installation time, raise overall system costs, and necessitate extensive training for personnel accustomed to older transformer technologies. In some cases, utilities may face operational disruptions during upgrades, leading to temporary service interruptions and increased scrutiny from regulatory bodies.

Moreover, the integration process must align with a host of local and national compliance standards, which may vary significantly across regions and jurisdictions. The absence of uniform standards for closed core technology can further complicate procurement and deployment, especially for multi-site or cross-border infrastructure projects. Utilities must also consider the interoperability of closed core transformers with existing control systems, monitoring platforms, and grid automation technologies—factors that can require significant investment in system redesign or digital upgrades. Consequently, while closed core distribution transformers are technologically advanced and energy-efficient, their integration into complex, aging infrastructure networks presents both logistical and financial hurdles that can impede widespread market penetration.

Key Market Trends

Advancements in Smart Grid Technologies and Digital Monitoring Integration

The Closed Core Distribution Transformer Market is increasingly influenced by the integration of smart grid technologies and digital monitoring capabilities. As utility companies transition to intelligent grid systems, there is a growing emphasis on enhancing transformer functionality through real-time data analytics, predictive maintenance, and automated fault detection. Closed core transformers are being equipped with sensors, communication modules, and Internet of Things (IoT) technologies to provide continuous visibility into transformer health, load conditions, and environmental parameters. This digitalization allows for remote diagnostics, proactive servicing, and optimization of energy flows, ultimately improving grid stability and reducing operational costs.

Utilities can now monitor the performance of transformers in real-time and detect anomalies before they lead to failures, thereby enhancing reliability and asset longevity. The shift toward grid intelligence also enables demand-side management and dynamic load balancing, further increasing the relevance of smart-enabled closed core transformers. The growing emphasis on grid resilience and automation, coupled with regulatory mandates for smarter infrastructure, is accelerating the adoption of digitally integrated transformer systems. Manufacturers are investing in developing transformer units with embedded software and cloud-connectivity features that support analytics platforms and centralized control systems. This trend is reshaping the market landscape by adding a layer of value-added services and digital functionality to what was traditionally a passive electrical device.

Shift Toward Eco-Friendly and Sustainable Transformer Solutions

Environmental sustainability has become a central trend shaping the Closed Core Distribution Transformer Market. Growing regulatory pressure to reduce greenhouse gas emissions and limit environmental impact is pushing transformer manufacturers to adopt greener materials, processes, and product designs. Closed core transformers are increasingly being developed with biodegradable insulation fluids, low-emission manufacturing techniques, and recyclable core materials to align with environmental standards. Utilities and infrastructure developers are also seeking solutions that support long-term energy savings and minimize ecological footprints, especially in the context of green building projects and sustainable urban planning.

The push for carbon neutrality by 2050 in many regions is creating strong demand for energy-efficient and environmentally responsible transformer technologies. Additionally, environmental certifications and lifecycle assessments are gaining prominence in procurement decisions, with customers favoring products that demonstrate superior environmental performance. The trend toward sustainability is not only driven by regulatory compliance but also by growing corporate social responsibility and consumer awareness. As a result, closed core transformers that offer energy savings, extended service life, and minimal maintenance are becoming increasingly attractive in both public and private sector projects. Manufacturers are responding by investing in R&D to enhance transformer efficiency while reducing material usage and environmental impact, positioning themselves as sustainability leaders in the competitive landscape.

Rising Adoption of Modular and Compact Substation Solutions

The growing preference for modular and compact substations is significantly influencing the Closed Core Distribution Transformer Market. With rapid urbanization, space constraints, and the need for faster deployment of electrical infrastructure, utilities and developers are turning to compact substations that integrate closed core transformers in a space-efficient configuration. These modular systems are designed for quick installation, scalability, and minimal on-site construction, making them ideal for applications in urban centers, industrial parks, transportation hubs, and remote regions. Closed core transformers, known for their smaller footprint and high power density, are well-suited for integration into these compact setups.

The trend toward modularity also aligns with the increasing need for flexible power infrastructure that can be easily relocated, upgraded, or expanded to accommodate changing load profiles and evolving energy demands. Additionally, prefabricated substation units reduce installation time and labor costs, making them a cost-effective solution for time-sensitive and large-scale grid expansion projects.

Governments and utilities focused on improving electrification rates and strengthening distribution networks are increasingly adopting modular solutions as part of their infrastructure strategy. This trend is expected to accelerate further as energy systems evolve to support decentralized generation, renewable integration, and demand-side management, with closed core transformers playing a pivotal role in enabling compact, resilient, and future-ready distribution architectures..

Segmental Insights

Cooling Type Insights

The Air-Cooled segment held the largest Market share in 2024. The Air-Cooled segment within the Closed Core Distribution Transformer Market is experiencing notable growth, driven by the increasing demand for energy-efficient, low-maintenance, and environmentally safe transformer solutions. Air-cooled transformers, also known as dry-type transformers, do not use liquid insulating or cooling mediums, making them ideal for indoor installations and applications where fire safety, environmental concerns, and maintenance simplicity are top priorities. Their inherent safety features, such as minimal risk of fluid leakage and lower flammability, make them well-suited for deployment in hospitals, commercial buildings, manufacturing plants, and institutions where operational safety is critical.

The growing emphasis on sustainable infrastructure and compliance with strict environmental regulations has further increased the preference for air-cooled systems, which eliminate the need for oil handling, containment systems, and periodic fluid monitoring. Additionally, air-cooled closed core transformers offer advantages in terms of installation flexibility, as they are generally lighter, more compact, and easier to transport and position compared to oil-immersed alternatives. This makes them highly attractive for retrofitting projects, urban developments, and modular substation solutions where space and installation time are constrained.

The design of air-cooled closed core transformers supports excellent thermal dissipation through natural or forced air ventilation, and advancements in insulation materials and winding technologies have significantly improved their performance, enabling them to handle higher loads while maintaining efficiency and reliability. Moreover, their quiet operation and low electromagnetic emissions make them suitable for sensitive environments like data centers, laboratories, and educational institutions. With energy systems becoming increasingly decentralized and integrated with smart monitoring capabilities, air-cooled transformers are now being designed with sensors and digital interfaces for condition monitoring, predictive maintenance, and grid connectivity.

This technological evolution has enhanced their utility in smart grid infrastructures, where real-time data and operational transparency are essential. The rise in renewable energy integration and the expansion of EV charging infrastructure also contribute to the demand for air-cooled transformers, particularly in distributed power systems where compact and fire-safe solutions are needed. As industries and municipalities seek transformer options that combine operational efficiency, environmental responsibility, and ease of ownership, the air-cooled closed core segment stands out as a key enabler of modern power distribution strategies.

Additionally, their ability to function in humid or polluted environments without the risk of oil contamination or corrosion has made them popular in coastal and industrial regions. Manufacturers are responding to this growing demand by investing in innovative coil winding techniques, improved cooling designs, and advanced insulation systems that enhance the longevity and performance of air-cooled transformers under a wide range of load and climate conditions. The ongoing global push toward electrification, urbanization, and sustainable infrastructure development ensures a steady and expanding market for air-cooled closed core distribution transformers in the years ahead.

Power Rating Insights

The Up to 100 kVA segment held the largest Market share in 2024. The “Up to 100 kVA” segment in the Closed Core Distribution Transformer Market is witnessing notable growth driven by the increasing demand for low-capacity, high-efficiency transformers in residential, rural, and small commercial applications. These compact transformers are crucial for last-mile power delivery, stepping down medium-voltage electricity to usable levels for end-users in localized grids. With global electrification efforts expanding into remote and underserved areas, particularly in developing economies, the need for cost-effective and reliable distribution solutions in the sub-100 kVA range has intensified.

Closed core transformers in this category are favored for their high energy efficiency, low noise levels, and compact design, which make them especially suitable for residential communities, small industrial units, telecom towers, and agriculture-related installations such as irrigation pumps and cold storage facilities. These transformers can easily be mounted on poles or compact pads, minimizing installation costs and space usage—key factors in rural and peri-urban power infrastructure development. The growing adoption of renewable microgrids and distributed generation systems, such as rooftop solar and small wind turbines, is further accelerating the deployment of sub-100 kVA closed core units to manage bidirectional energy flows and localized load balancing.

Governments, particularly in regions such as Asia-Pacific and Sub-Saharan Africa, are aggressively investing in rural electrification programs and grid extension projects, where up to 100 kVA transformers serve as the backbone for energy access. Moreover, increased urban densification has resulted in a rise in multi-family housing, gated communities, and small commercial establishments that require compact, reliable, and low-maintenance transformer systems. This has created consistent demand for closed core transformers offering safety, efficiency, and durability in constrained environments.

The “Up to 100 kVA” segment also benefits from trends toward smart metering and digital control, as utilities increasingly seek to monitor even low-capacity distribution points in real time. Manufacturers are responding with innovative transformer designs that integrate sensor technologies, overload protection, and eco-friendly insulation materials, ensuring compliance with modern efficiency standards. As power distribution systems become more decentralized and consumer expectations for service reliability increase, the importance of robust, small-capacity transformers in sustaining voltage stability and minimizing losses becomes more pronounced.

These transformers not only play a vital role in improving power quality at the endpoint but also enhance the overall efficiency and flexibility of the grid. With global emphasis on energy access, sustainable development, and grid modernization, the “Up to 100 kVA” segment is expected to remain a critical growth area within the Closed Core Distribution Transformer Market, supported by ongoing infrastructure investments and technological innovation tailored to low-load applications.

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Regional Insights

Largest Region

The North America region held the largest market share in 2024. The Closed Core Distribution Transformer Market in the North America region is being significantly driven by the region's strategic focus on modernizing aging grid infrastructure and enhancing power system resilience. The United States and Canada are witnessing a surge in efforts to replace outdated electrical components with high-efficiency, next-generation technologies to meet the growing demands of electrification, sustainability, and reliability. Closed core distribution transformers are at the forefront of this transformation due to their superior energy efficiency, low magnetic losses, and compact design that aligns with space-constrained urban infrastructure.

North America's vast and aging utility grid—much of which was developed several decades ago—is now undergoing substantial upgrades to accommodate new load patterns driven by the increasing penetration of electric vehicles, renewable energy sources, and digital technologies. In this context, closed core transformers are being deployed as critical components in improving voltage regulation, reducing energy waste, and ensuring uninterrupted power supply across both residential and commercial sectors. The trend toward decentralization of energy systems is also prominent in North America, where distributed energy resources like rooftop solar and battery storage systems are increasingly integrated into the power mix.

Closed core transformers play a key role in supporting bidirectional power flows, enabling the efficient distribution of locally generated energy while stabilizing the grid. Additionally, several federal and state-level initiatives promoting energy efficiency, decarbonization, and resilient infrastructure are creating a favorable regulatory environment that encourages the adoption of high-performance distribution transformers. North American utilities are actively seeking solutions that meet stringent energy standards while offering long-term reliability and reduced maintenance requirements, making closed core technology a strategic fit. Furthermore, the growing frequency of extreme weather events, such as wildfires, hurricanes, and winter storms, has highlighted the importance of grid resilience, pushing utilities to invest in robust transformer systems capable of operating under harsh environmental conditions.

Closed core distribution transformers, with their strong mechanical integrity and enhanced load-handling capacity, meet these resilience demands effectively. Meanwhile, the push for grid automation and smart grid capabilities is encouraging the integration of sensors and communication technologies into transformers, positioning closed core units as key enablers of intelligent power distribution in the region. As North America continues to expand its digital infrastructure and electrify transportation and industrial operations, the demand for advanced and compact transformer solutions is expected to grow rapidly.

With utilities, municipalities, and private sector players increasingly prioritizing sustainable energy infrastructure, the North American market presents a strong growth outlook for closed core distribution transformers. These developments reflect a broader regional commitment to building a future-ready, energy-efficient, and digitally empowered grid, where closed core transformers are set to play a foundational role.

Emerging region:

South America is the emerging region in Closed Core Distribution Transformer Market.  The Closed Core Distribution Transformer Market in South America is experiencing growing momentum, driven by the region's urgent need to modernize its aging power infrastructure and expand electricity access in underserved areas. Emerging economies within South America, such as Brazil, Argentina, Colombia, and Peru, are undergoing rapid urbanization and industrial development, which is increasing the strain on existing grid systems. These nations are investing heavily in upgrading and expanding their electricity distribution networks to meet rising energy demands, reduce losses, and ensure more reliable service delivery across urban and rural regions.

Closed core distribution transformers are increasingly being adopted in these initiatives due to their superior energy efficiency, compact design, and capacity to operate under fluctuating voltage conditions typical of less stable grids. Their reduced magnetic flux leakage and lower core losses make them particularly attractive for utility companies and municipalities aiming to reduce energy waste and improve operational reliability. Moreover, as South American governments introduce policy reforms and regulatory frameworks to promote renewable energy integration, there is a growing emphasis on grid reinforcement to accommodate decentralized energy sources like solar and wind. Closed core transformers are well-suited to support bi-directional power flow and dynamic load balancing in distributed generation setups, making them a strategic asset in the region’s energy transition.

In addition, economic development initiatives across the continent—focused on improving transport, healthcare, and educational infrastructure—require dependable and resilient power distribution solutions. The closed core configuration, known for its stability and low maintenance needs, aligns with these national priorities. International development agencies and private investors are also playing a role by funding energy projects that emphasize long-term sustainability and resilience, further boosting the adoption of modern transformer technologies. The rising demand for smart grid technologies in major South American cities is another factor supporting the deployment of closed core transformers integrated with monitoring systems and automated controls.

These digital-ready systems enable real-time energy management and predictive maintenance, which are critical for regions facing frequent outages or voltage fluctuations. Furthermore, the region’s commitment to reducing carbon emissions and aligning with global climate agreements is encouraging utilities to invest in efficient, environmentally friendly components like closed core transformers. Local transformer manufacturers are increasingly adopting global design standards and technologies to meet the evolving performance expectations, making the market more competitive and innovation-driven.

The combination of infrastructure development, energy efficiency mandates, renewable energy growth, and digital transformation initiatives positions South America as a promising emerging region for closed core distribution transformer adoption. As economic conditions stabilize and energy access expands, the role of high-performance transformers in enabling sustainable and reliable electricity distribution will continue to grow, making South America an important contributor to the global expansion of this market segment.

Recent Developments

• In November 2024, Siemens Energy’s board approved an additional investment of INR 100 crore (USD 11.68 million)  for its Kalwa transformer facility in Maharashtra. The funding will expand the product range to include large reactors. This follows a prior investment of INR 360 crore (USD 42.05 million) in November 2023, aimed at doubling the plant’s manufacturing capacity from 15,000 MVA to 30,000 MVA by December 2025. The expansion project remains on track, with the latest funding sourced from internal reserves.
• In October 2024, Hitachi Energy announced a USD 250 million investment in India over the next five years to scale up its manufacturing capacity, broaden its product portfolio, and strengthen its talent base. This forms part of the company’s USD 6 billion global strategy focused on accelerating clean energy initiatives through manufacturing, R&D, digital innovation, and partnerships. In India, the investment will support capacity expansion at its large power transformer plant, relocation of its bushings factory to Gujarat, and upgrades in testing infrastructure for specialty transformers. 
• In June 2025, Hitachi Energy unveiled its latest innovation for distribution grids—the Compact Line Voltage Regulator (C-LVR)—at CIRED 2025, the premier international conference on electricity distribution. The C-LVR is an integrated solution that combines voltage regulation and power transformation into a single, compact unit designed for modern distribution networks. Installed within the same footprint as a standard distribution transformer, it allows for active voltage control at the feeder level without the need for extra space or infrastructure modifications.

Key Market Players

• Siemens Energy AG
• ABB Ltd.
• General Electric Company (GE Grid Solutions)
• Schneider Electric SE
• Mitsubishi Electric Corporation
• Toshiba Energy Systems & Solutions Corporation
• Hyundai Electric & Energy Systems Co., Ltd.
• Eaton Corporation plc
• CG Power and Industrial Solutions Limited
• Howard Industries, Inc.

Report Scope:

In this report, the Global Closed Core Distribution Transformer Market has been segmented into the following categories, in addition to the industry trends which have also been detailed below:

• Closed Core Distribution Transformer Market, By Cooling Type:

o   Air-Cooled

o   Oil-Cooled

o   Dry Type  

• Closed Core Distribution Transformer Market, By Power Rating:

o   Up to 100 kVA

o   101 kVA to 500 kVA

o   501 kVA to 1000 kVA

o   Above 1000 kVA  

• Closed Core Distribution Transformer Market, By Application:

o   Commercial Buildings

o   Industrial Facilities

o   Utilities

o   Renewable Energy Systems  

• Closed Core Distribution Transformer Market, By Region:

o   North America

§  United States

§  Canada

§  Mexico

o   Europe

§  France

§  United Kingdom

§  Italy

§  Germany

§  Spain

o   Asia-Pacific

§  China

§  India

§  Japan

§  Australia

§  South Korea

o   South America

§  Brazil

§  Argentina

§  Colombia

o   Middle East & Africa

§  South Africa

§  Saudi Arabia

§  UAE

§  Kuwait

§  Turkey

Competitive Landscape

Company Profiles: Detailed analysis of the major companies presents in the Global Closed Core Distribution Transformer Market.

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Company Information

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