Mitsui Mining & Smelting Co., Ltd. engages in the manufacture and sale of functional materials, electronic materials, and automotive parts. It operates through the following segments: Engineered Materials, Metals, Automotive Parts and Components, and Affiliates Coordination. The Engineered Materials segment offers battery materials, exhaust gas purification catalysts, functional powders, copper foil, and ceramic products. The Metals segment provides zinc, lead, copper, gold, and silver. It also deals with the resource recycling business. The Automotive Parts and Components segment handles the manufacture and sale of door locks for automobiles. The Affiliates Coordination segment covers die cast, powder metallurgy, copper, and pearlite products. The company was founded in September 1874 and is headquartered in Tokyo, Japan.

Yunnan Luoping Zinc and Electricity are involved in the processes of mining and processing lead-zinc, fule lead-zinc, the Lazhuang Power Plant, the Superfine Zinc Powder Plant, the Comprehensive Utilization Plant, and the Sulfuric Acid Plant. Their products include zinc ingots, metal zinc powder, cadmium ingots, indium ingots, and concentrate.

Xiangyun Gaoxin Circulation Technology Co., Ltd., established on 2016-12-16, Business scope includes collection of waste lead-acid batteries,storage,Disposal and Recycling,Use proprietary technology to extract and recover valuable metals from hazardous waste and further process products,Sell ​​self-produced products;Resource regeneration and comprehensive utilization technology,Equipment research and development.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Yunnan Tianhao Rare and Precious Metals Co., Ltd., established on 2001-12-18, Business scope includes lead,zinc,germanium,Indium production,processing,Sales;High Purity Metal Zinc Powder,High Purity Zinc Oxide Powder,germanium,indium,Sales of other rare and precious metals;Import and export business of goods and technology(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Yongxing Changxin Bismuth Industry Co., Ltd., established on 2015-04-21, Business scope includes metal scrap processing;Hazardous waste disposal and utilization;gold,silver,tin,lead,copper,bismuth,antimony,zinc,indium,platinum,rhodium,Palladium,selenium,Production of tellurium and its compounds and alloys,processing,Sales;tungsten,molybdenum,Tantalum,niobium,sales of mineral products;iron,Ferrous metal mineral products such as manganese,production of materials,processing,Sales;Comprehensive recycling of renewable resources,Raw materials needed to run the business,meter,instrument,Equipment,As well as the import and export business of the products produced by the enterprise itself and the required raw and auxiliary materials;Technical Advisory Services.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Zhuzhou Smelter Group Co., Ltd. engages in the smelting and selling nonferrous metal products, mineral products and by-products. It focuses on production and sales of industrial sulfuric acid and sulfur dioxide flue gas; and research, development, production, and sale of new metal materials. Its production includes lead, zinc, and its alloy products. It involves in recovery of dilute precious metal and sulfuric acid such as copper, gold, silver, bismuth, cadmium, indium, and tellurium. Its products are used in construction, home appliances, ship, machinery, and communication power. The company was founded in 1956 and is headquartered in Zhuzhou, China.

Zhongke Zhuoyi Environmental Technology (Dongguan) Co., Ltd., established on 2019-12-17, Business scope includes porous media combustion technology development,technical consulting,technology transfer,Technical Services;Combustion System,kiln,furnace,Heat treatment furnace,heating furnace,Toaster design,to assemble,research and development,Production and sales and installation of the above products,Commissioning and Maintenance Services.(The above items do not include special equipment)(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

MCC Huludao Nonferrous Metals Group Co., Ltd., established on 2002-11-15, Business scope includes non-ferrous metal smelting,Processing and comprehensive utilization products(Refined Zinc,copper,lead)Sales;Import and export of goods and technology.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments.)

JX Nippon Mining & Metals Corp. engages in the development and mining of non-ferrous metal resources. Its products include copper foil, sputtering targets, compound semiconductors, surface treatment agents, metallic powder, precision rolled products, cathode materials and precision fabricated products. The company was founded in December 1905 and is headquartered in Tokyo, Japan.

JFE Steel Corp. engages in the manufacture and sale of steel products. Its products include steel plates for ships and bridges, steel sheet for automobiles, home electrical appliances, and wall and roof construction, special steel, structural steel, stainless steel, steel rods for construction, and steel-pipe. The company was founded on April 1, 2003and is headquartered in Tokyo, Japan

Manufactures and distributes steel pipes

Mitsubishi Materials Corp. engages in the manufacture and sale of cement, metals, ceramics, and other industrial materials. It operates through the following segments: High-Performance Products, Processing business, Metal business, Cement business and Other business. The High-Performance Products segment manufactures and sells copper processed products, functional materials, electronic devices, chemical products, polycrystalline silicon and Aerosil. The Processing business manufactures and sells carbide products and sintered products. The Metal business smelts and sells Copper, gold and silver. The Cement Business segment manufactures and sells cement and ready-mixed concrete. The Other Business involves in geothermal and hydroelectric power generation business, environmental recycle business, real estate, Civil engineering, construction, repair work and geological survey. The company was founded by Yataro Iwasaki in May 1871 and is headquartered in Tokyo, Japan.

Dowa Kogyo KK engages in the business of general building management services. It also provides the building maintenance and cleaning; engineering; survey and management of environment; commercial broadcasting; and other services. The company was founded on March 1, 1961 and is headquartered in Sendai, Japan.

Xuanwei Hongye Metal Technology Co., Ltd., established on 2019-07-08, Business scope includes metal materials,Rare and precious metals,Minerals(Does not include special approval items),Agricultural and sideline products(No Tobacco),building materials,chemical material(Does not contain dangerous goods)buy and sell;import and export trade;Non-ferrous metal smelting,Precious metal smelting,Manufacturing of non-ferrous metal alloys,Non-ferrous metal rolling processing;zinc,indium,Production and sales of germanium series products.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)