Research Institute of Industrial Science & Technology, part of POSCO Holdings Inc., is a company headquartered in Pohang, the South Korea. The firm engages in commercial physical and biological research and development.

POSCO Holdings Inc. engages in the production of steel products. It operates through the following divisions: Steel, Engineering & Construction and Trading. The Steel division produces cold rolled, hot rolled and stainless steel products, plates, wire rods and silicon steel sheets. The Engineering & Construction division engages in the planning, designing and construction of industrial plants, civil engineering projects, commercial and residential buildings. The Trading division exports and imports steel products and raw materials. The company was founded by Tae-Joon Park on April 1, 1968 and is headquartered in Seoul, South Korea.

Kawasaki Kasei Chemicals Ltd. engages in the refinement and processing of chemicals. It manufactures chemicals used for dyes, pigments, and pesticides. The company was founded on May 20, 1948 and is headquartered in Kawasaki, Japan.

Tanaka Kikinzoku Kogyo KK manufactures, sells, imports, and exports industrial metal products. Its products include platinum, gold, silver and others. The firm also does refining and recycling of precious metals. The company was founded in 1885 and is headquartered in Tokyo, Japan.

Fuji Shoji Co., Ltd. is a Japanese company located in Tokyo with a presence in China that produces and wholesales food additives for dessert. The firm was founded in 1957.

DAECHANG Co., Ltd. engages in the manufacture of non-ferrous metal products. Its products include free cutting, forged, and high-strength brass rods, brass class two, dezincification resistance brass, lead free brass, and copper anode. The company was founded on December 19, 1977 and is headquartered in Siheung-si, South Korea.

Kurita Water Industries Ltd. (栗田工業株式会社 Kurita Kōgyō Kabushiki-gaisha) is a Japanese manufacturer, providing water treatment chemicals and facilities as well as process treatment chemicals. During the 50´s Kurita Water Industries expanded the portfolio and started with the water treatment facilities business, chemical cleaning business (Kurita Engineering Co., Ltd.) and maintenance services. In her second decade, the 60´s, Kurita Water Industries entered the process treatment market, especially in the pulp and paper, petrochemical and steel industries. Since the mid of the 70´s up to now, Kurita Water Industries established 14 overseas subsidiaries and affiliates. Since 2003 Kurita Water Industries is listed in the Nature Stock Index (NAI = Natur-Aktien-Index).

Nanjing Yuanquan Environmental Protection Technology Co., Ltd., established on 2008-10-20, The business scope includes the recycling of electroplating cleaning water and the development of waste water zero discharge system;Operation Management of Electroplating Wastewater Treatment Facility;Treatment of electroplating wastewater and waste liquid;Environmental Engineering,Industrial Wastewater Treatment Project,Design of Urban and Environmental Sewage Treatment Projects,Construction and related sewage treatment technical services,Training and Consulting;Manufacture of water treatment equipment,Sales and after-sales service;Construction and operation of sewage treatment facilities;Production and sales of chemical products(Free of Hazardous Chemicals);Green facilities,Plating equipment,Painting equipment,General equipment and accessories,Power transmission and distribution and control equipment,Manufacture of Metal Structural Parts,processing,Install,Sales;road general cargo transportation;real estate,Governance of park landscape water body and construction of ecological waterscape;Eutrophication Control and Ecosystem Restoration of Urban Lakes;Water Quality Purification and Ecological Protection of Urban Water Sources;Urban River Water Pollution Control and Ecosystem Restoration;Deep purification and comprehensive utilization of municipal tail water;New Rural Sewage Treatment and Ecological Restoration.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

KYB Corp. engages in the manufacture and sale of shock absorbers, hydraulic equipment and system products. It operates through the following segments: Automotive Components, Hydraulic Components, System Products and Others. The Automotive Components segment includes shock absorbers, suspension systems, power steering systems, vane pumps, front forks, oil cushion units, stay dampers, and locks. The Hydraulic Components segment consists of cylinders, valves, oil dampers, shock absorbers, pumps, motors, and aircraft systems. The System Products segment includes simulators, auditorium and stage control systems. The Others segment composes of specially-equipped vehicles, concrete mixer trucks, environmental equipment, electronics, simulators, naval equipment, and hydraulic systems. The company was founded by Shiro Kayaba on November 19, 1919 and is headquartered in Tokyo, Japan.

Nihon Techno Co. Ltd. is a Japanese private company located in Tokyo. The firm provides power distribution services. Nihon Techno Co. Ltd. controls a large interest in EF-ON, Inc. (32.62 %).

Jiangmen Fengrong Metal Products Co., Ltd., established on 2007-04-18, Business scope includes production,processing,Sales of hardware products.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

De Nora Permelec Ltd., a subsidiary of Industrie De Nora SpA, is a Japanese company located in Fujisawa that manufactures and distributes metallic electrodes. On September 30, 2010 Industrie De Nora SpA acquired De Nora Permelec Ltd.

Provides water treatment services; manufactures and distributes industrial equipment, electronic components, and air-conditioning equipment; generates electricity

Rugao Honghao Metal Water Treatment Co., Ltd. engages in the treatment of heavy metal wastewater. The company was founded on April 30, 2010 and is headquartered in Rugao, China.

Jiangsu Yawei Machine Tool Co., Ltd. engages in the manufacture, processing, and distribution of numerical control sheet shaping machine tool products and automation production lines. It offers numeric control metal sheet processing machine tools, including numeric control bending machines, numeric control rotary-turret stamping machines, numeric control plate shears, and numeric control laser cutters, ordinary metal sheet processing machine tools, including ordinary bending machines, and ordinary plate shears, as well as numeric control coil processing machines, including numeric control uncoiling leveling shearing machines, and numeric control uncoiling rolling machines. The company was founded in 1956 and is headquartered in Yangzhou, China.

Jiangsu Lize Energy Saving Technology Co., Ltd., established on 2017-06-19, The business scope includes building insulation materials,soundproofing material,sound insulation material,Insulation and decoration integrated board and new materials,Packaging Materials,Research and development of mechanical equipment and accessories,Production,Sales;Research and development of building materials,technology transfer,Technical Services,Sales;Decoration and decoration engineering construction.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Suzhou Environmental Engineering Co., Ltd., established on 1993-09-09, Business scope includes special design of environmental protection projects,construction;Municipal Construction Engineering Construction;Industrial waste,Operation and management of domestic sewage and industrial solid waste environmental protection facilities;Environmental Engineering,Engineering Consulting for Municipal Public Works;Research and development of environmental protection and related technologies;Processing of environmental protection equipment,Production;storage(Does not contain dangerous goods);own house for rent.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Astec Irie Co., Ltd. manufactures steel products. It offers steel pipe, protective pipe end fittings, backing rings, and copper bands. The company was founded in February 1910 and is headquartered in Kita Kyushu, Japan.

Wuxi Zhongtian Solid Waste Disposal Co., Ltd., established on 2007-03-05, Business scope includes disposal,Utilize waste mineral oil(HW08),Oil/water,hydrocarbon/water mixture or emulsion(HW09),dye,Paint waste(HW12),waste developer,Fixer,waste film(HW16),Surface treatment waste(HW17),Waste acid(HW34),Spent caustic(HW35),Phenol-containing waste liquid(HW39),Ether waste liquid(HW40),Waste Halogenated Organic Solvents(HW41),waste organic solvent(HW42),Waste Halogenated Organic Solvents(HW45)100000Ton/year;Disposal of waste circuit boards(HW49)6000Ton/year;deal with,Utilize waste activated carbon(HW02,HW04,HW05,HW06,HW13,HW18,HW39,HW42,HW49)8000Ton/year;General cargo;waste materials(Does not contain hazardous waste)recycling,deal with;Sewage Treatment Services;cleaning service;Research and development of environmental protection technology,consultation service;Environmental Engineering Design,construction,Operation management;Drinking water testing,Source water testing,public place detection,Occupational Hazard Factor Detection and Evaluation,Environmental and Ecological Monitoring;Manufacturing of Environmental Pollution Prevention and Control Equipment,Install;Self-operated and agent import and export of various commodities and technologies(Except for commodities and technologies that the state restricts the company to operate or prohibits the import and export of).(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)