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Aluminum Corporation of China Limited, together with its subsidiaries, manufactures and sells alumina, primary aluminum, aluminum alloys, and carbon products in the People's Republic of China and internationally. The company operates through five segments: Alumina, Primary Aluminum, Trading, Energy, and Corporate and Other Operating. The Alumina segment mines for and purchases bauxite and other raw materials; refines bauxite into alumina; and produces and sells alumina, as well as refined alumina, gallium, and multi-form alumina bauxite. The Primary Aluminum segment procures alumina and other raw materials, supplemental materials, and electrical power; and produces and sells aluminum and aluminum-related products, such as carbon, aluminum alloy, and other electrolytic aluminum products. The Trading segment trades in alumina, primary aluminum, aluminum fabrication products, other non-ferrous metal products, coal products, and raw and supplemental materials; and provides logistics and transport services to external customers. The Energy segment mines for coal deposits; generates and sells electricity using thermal, wind, and solar power sources to regional power grid corporations; and manufactures power related equipment. The Corporate and Other Operating segment provides research and development services; and operates other aluminum-related business activities. The company also acquires, manufactures, and distributes bauxite mines and limestone ore; and provides engineering project management, as well as engages in import and export activities. Aluminum Corporation of China Limited was incorporated in 2001 and is headquartered in Beijing, the People's Republic of China.

BP Prudhoe Bay Royalty Trust operates as a grantor trust in the United States. It is involved in holding overriding royalty interest in the Prudhoe Bay oil field located on the North Slope of Alaska. The Prudhoe Bay field extends approximately 12 miles by 27 miles and contains approximately 150,000 gross productive acres. BP Prudhoe Bay Royalty Trust was incorporated in 1989 and is based in Houston, Texas.

Quaker Chemical Corporation, together with its subsidiaries, develops, produces, and markets various formulated specialty chemical products for a range of heavy industrial and manufacturing applications in the Americas, Europe, the Middle East, Africa, and the Asia Pacific. It offers metal removal fluids, cleaning fluids, corrosion inhibitors, metal drawing and forming fluids, die-cast mold releases, heat treatment and quenchants, metal forging fluids, hydraulic fluids, specialty greases, offshore sub-sea energy control fluids, rolling lubricants, rod and wire drawing fluids, and surface treatment chemicals. The company also provides chemical management services. It serves steel, aluminum, automotive, aerospace, offshore, container, mining, and metalworking companies. The company was founded in 1918 and is headquartered in Conshohocken, Pennsylvania.

Weatherford International plc, an oilfield service company, provides equipment and services for the drilling, evaluation, completion, production, and intervention of oil and natural gas wells worldwide. The company operates in two segments, Western Hemisphere and Eastern Hemisphere. It offers artificial lift systems, including reciprocating rod, progressing cavity pumping, gas, hydraulic, plunger, and hybrid lift systems, as well as related automation and control systems; pressure pumping and reservoir stimulation services, such as acidizing, fracturing and fluid systems, cementing, and coiled-tubing intervention; and drill stem test tools, and surface well testing and multiphase flow measurement services. The company also provides safety, downhole reservoir monitoring, flow control, and multistage fracturing systems, as well as sand-control technologies, and production and isolation packers; liner hangers to suspend a casing string in high-temperature and high-pressure wells; cementing products, including plugs, float and stage equipment, and torque-and-drag reduction technology for zonal isolation; and pre-job planning and installation services. In addition, it offers directional drilling services, and logging and measurement services while drilling; services related to rotary-steerable systems, high-temperature and high-pressure sensors, drilling reamers, and circulation subs; managed pressure drilling, conventional mud-logging, drilling instrumentation, gas analysis, wellsite consultancy, and open hole and cased-hole logging services; reservoir solutions and software products; and intervention and remediation services. Further, the company provides equipment and drilling tools; tubular handling, management, and connection services; equipment rental services; and onshore contract drilling and related services through a fleet of land drilling and workover rigs. Weatherford International plc was incorporated in 1972 and is headquartered in Baar, Switzerland.