Siemens AG is a technology company, which engages in the areas of automation and digitalization in the process and manufacturing industries, infrastructure for buildings and energy systems, mobility solutions for rail transport, and medical technology and digital healthcare services. It operates through the following segments: Digital Industries, Smart Infrastructure, Mobility, Siemens Healthineers, and Siemens Financial Services. The Digital Industries segment offers a product portfolio and system solutions for automation used in discrete and process industries. The Smart Infrastructure segment includes products, systems, solutions, services and software to support a transition from fossil to renewable energy sources. The Mobility segment combines all Siemens businesses in the area of passenger and freight transportation. The Siemens Healthineers segment develops, manufactures, and sells diagnostic and therapeutic products, and services to healthcare providers. The Siemens Financial Services segment focuses on financing solutions for Siemens’ customers as well as other companies in the form of debt and equity investments. The company was founded by Johann Georg Halske and Werner von Siemens on October 12, 1847 and is headquartered in Munich, Germany.

SGCC was founded on Dec. 29th, 2002 as a pilot state-owned corporation by the State Council. As a backbone state-owned enterprise that may affect national energy safety and economic lifelines, SGCC's core business is to build and operate power grids and provides secure and reliable power supply for the development of the society. With a registered capital of RMB 200 billion yuan and service area covering 26 provinces,autonomous regions and municipalities directly under the jurisdiction of the Central Government which equals to 88% of the national territory. SGCC carries out the president responsibility system. The president is the legal corporate representative of SGCC. By the end of 2005, SGCC accumulated a total asset of RMB1176.7 billion yuan with a debt-asset ratio of 61.96%, and possessed 195,899 km of 220kV and above transmission lines with a transforming capacity up to 616.64 GVA. SGCC has 1.502 million employees and serves 128 million customers. In 2005, SGCC sold electric power up to 1464.6 TWh and achieved an operation income of RMB 721.4 billion yuan with a net profit of RMB14.4 billion yuan profit & tax of RMB 60.4 billion yuan. SGCC was ranked the 40th in the Fortune Global 500 in 2005.

Zhejiang Chint Electrics Co., Ltd. engages in the research and development, production, and sales of low-voltage electrical appliances. It focuses on electrical and electronic appliances, instrumentation, and building electrical and automation control systems; production and sales of solar cells and modules, and engineering, procurement and construction (EPC) general contracting; and power station development, construction, operation,and maintenance. The low-voltage electrical appliances include power distribution appliances, terminal appliances, control appliances, and power appliances. The company was founded on August 5, 1997 and is headquartered in Wenzhou, China.

ABB Group, part of ABB Ltd., is a Swedish company that manufactures electrical and electronic products.

Part of Eaton Corp. Plc, Eaton Industries (Austria) GmbH is an Austrian company that designs, manufactures, markets and services electrical systems and components for power quality, distribution and control.

ABB Ricerca SpA engages in the provision of information technology solutions. The company is headquartered in Sesto San Giovanni, Italy.

Greenbrook Electrical Ltd., a subsidiary of GreenBrook Industries Ltd., is a British company located in Harlow. The firm wholesales electric equipment. It was founded in 1952. Richard Darrell Shaw is currently the CEO of the company.\nThe company says this about itself: With over 60-years track record in the electrical industry, GreenBrook has always moved ahead of the times. Since its beginnings as a manufacturer of electromechanical relays, the company has transformed itself through product development, innovation and strategic acquisition to meet the present and future needs of its customers. Now boasting an extensive range of innovative, solution-driven products and electrical accessories, GreenBrook consistently offers a comprehensive service to our network of Wholesale Distributors and Contractors throughout the UK.

Eaton Electrical Ltd. (doing business as Yueqing Eaton Electrical Technology Co. Ltd.), a subsidiary of Eaton Corp. Plc, is a company headquartered in yueqing, China. The firm produces low voltage electrical apparatus.

Schneider Electric Industries SAS manufactures and sells electrical devices. The company was founded on March 21, 1994 is headquartered in Rueil-Malmaison, France.

Part of Eaton Corp. Plc, Moeller Geb��udeautomation GmbH is a German company that operates electrical stores.

Heinrich Kopp GmbH manufactures and distributes electrical installation materials. Its products include switch ranges, socket for flush-mounted switch ranges, motions, radio system free control, sockets, extensions, and adapter, plugs, and couplings, mobile personal protection, mobile passenger, miniature, residual current, and leakage circuit breakers , accessories electric, distribution installation device, distribution boxes, electrical installation shell, tools and measurement equipment, pipes, cables, and accessories, lighting and accessories, gongs and bell plates, and other installation accessories. The company was founded in 1927 and is headquartered in Kahl, Germany.

Bender offers insulation monitoring, insulation troubleshooting, residual current monitoring, grounding stand monitoring, power product, measuring relays, monitoring relays, communication product, operation product, monitoring product, switching devices, distributors, testing technology, current transformer, surgical lights, wall supply units, ceiling supply units, operating tables, components, charge regulator, and more.

Leviton is a global leader in electrical wiring devices, data center connectivity solutions and lighting energy management systems. A member of the USGBC (United States Green Building Council), Leviton was founded at the turn of the 20th century, and has grown to become a preeminent leader in the industry. Today Leviton's product portfolio consists of more than 25,000 devices and systems used in homes, businesses and industry. Nine out of ten buildings and homes throughout North America use products made by Leviton and builders, electrical contractors and other industry professionals rank Leviton products #1 in brand preference. Leviton products are the smart choice for smart professionals.

Gewiss is a Leading international company in the design and construction of home automation systems and electrical systems for civil and industrial use.

Eaton Industries Manufacturing GmbH, a subsidiary of Eaton Corp. Plc, is a company headquartered in Morges, Switzerland. The firm designs, manufactures, markets and services electrical systems and components for power quality, distribution and control.

Eaton Intelligent Power Ltd., part of Eaton Corp. Plc, is a company headquartered in Ireland that provides securities brokerage and fund management services.

Jiangsu Electric Power Co. is a state-owned electric company that is mainly engaged in the constructions, management, sales & maintenance of pwer grids. The company also handles the construction, building, research, management & power-related design of electric companies within Jiangsu Province. The company was founded in December, 1988 and is headquartered in Jiangsu, CN.

The company was founded on December 15, 1902 by Bryson Dexter Horton and James B. McCarthy. In 1903 they incorporated as the McBride Manufacturing Company. During the first decade of business, the company expanded into various other electrical products. In 1908, the company was renamed Detroit Fuse and Manufacturing. Soon after their renaming to Detroit Fuse and Manufacturing, the company adopted their famous logo: a capital letter D for Detroit enclosed in a square. The logo was stamped on all Square D's switches and products.