Norsk Hydro ASA is one of the largest aluminum companies in the world, with headquarters in Olso. Norsk Hydro operates in about 50 countries around the world and is present on all continents. 34.4% of the company is state-owned (Norway) and 6.5% is owned by Folketrygdfond - administers the Government Pension Fund of Norway.

Hydrogen works across all segments of the aluminum sector, from production to recycling and use. In addition, Hydro is also involved in the field of hydropower and solar power technologies. Currently, the company has about 35,000 employees.

Headquarters: Oslo, Norway
Founded: 1905
Revenue: < $137.7B
Marketing Cap: 16.35B
Website: https://www.hydro.com/

Rio Tinto Group is a multinational corporation with a combination of the UK and Australia. Rio Tinto Aluminum Manufacturing Company is a subsidiary of the metal mining group (Rio Tinto Group) the world's second-largest after BHP. Rio Tinto consolidated its aluminum-related businesses into an aluminum products group (originally named Rio Tinto Alcan), which was formed in late 2007 when Rio Tinto acquired the Canadian company Alcan.

Aluminum production is divided into three main areas by Rio Tinto: bauxite, alumina, and primary metals. Aluminum and bauxite are mined raw by Rio Tinto from sites in Australia, Brazil, and Africa. Currently, Rio Tinto has 6 aluminum refineries, 6 special aluminum production plants, and 26 aluminum smelters.

Headquarters: Montreal, Canada.
Founded: 2007
Revenue: < $44.6B

Marketing Cap: 148.99B

Website: https://www.riotinto.com/

Aluminum Corporation of China Limited (China Aluminum Corporation), also known as Chalco, is one of the world's largest electric aluminum production groups and has a huge production volume. Chalco has a total of more than 100,000 employees and is active in copper and other metals, such as bauxite and coal mining, alumina refining and primary aluminum smelting.

The company is state-owned and listed on the Shanghai, Hong Kong and New York Stock Exchanges. The headquarters is located in Beijing, China. Some companies and factories under China Aluminum Group include Shandong Aluminum Company, Pingguo Aluminum Company, Shanxi Aluminum Factory, and Lanzhou Aluminum Factory.

Headquarters: Beijing, China.

Founded: 2001

Revenue: < $26B

Marketing Cap: 95.12B

Website: http://www.chalco.com.cn/

Guangdong Xingfa Group (full name is Guangdong Xingfa Aluminum Co., Ltd) is a global aluminum manufacturing company established in 1984 with its headquarters located in Foshan, Guangdong, China. Xingfa is one of the oldest aluminum manufacturers in China. Currently, Xingfa Group owns 636 patents in many important fields with more than 40,000 different products, becoming a large-scale enterprise on a global scale.

The main areas that Xingfa Group participates in include manufacturing aluminum for construction applications, electronic machinery, transportation, aviation... Xingfa's products are widely used on a global scale. In 2003 and 2008, Xingfa Group ranked #1 in the list of "Top 10 Aluminum Manufacturing Enterprises of China".

Headquarters: Guangdong, China.

Founded: 1984

Revenue: < $13.3B

Marketing Cap: 3.00B

Website: https://www.xingfa.com/

China Hongqiao Group is one of the world's largest aluminum producers founded in 1994 by the late president Zhang Shiping. Hongqiao has surpassed its main competitor - Russia's UC Rusal - to become a leading manufacturer of the world's largest aluminum producer in 2015. Previously, the group was named Shandong Hongqiao but later changed to China Hongqiao Group. During its development, the company acquired thermal energy supplier Aluminum & Power in June 2006.

Hongqiao started to produce aluminum and electricity in 2002 and owns a capacity of up to 400 million tons. The company owns subsidiaries, including Shandong Weiqiao Aluminum Power Co., Ltd., Huimin Huihong New Aluminum Profiles Co., Ltd., Hongqiao Investment (Hong Kong) Limited and focuses on manufacturing molten aluminum alloy, aluminum alloy casting-rolling products, aluminum busbars, and aluminum alloy ingots.

Headquarters: Huixian, China.

Founded: 1994

Revenue: < $10B

Marketing Cap: 74.38B

Website: http://en.hongqiaochina.com/

Alcoa Corporation is an American industrial corporation - the sixth-largest aluminum producer in the world - with headquarters in Pittsburgh, Pennsylvania. Alcoa currently operates in 10 countries and has facilities located in Australia, Suriname, Sao Luis, Guinea, Texas, Brazil, and Spain.

Alcoa primarily manufactures primary aluminum, fabricated aluminum and alumina combined. Alcoa is actively engaged in key areas of several industries such as technology, mining, smelting, refining, fabrication, and recycling. On November 1, 2016, Alcoa Inc. split into two units: Alcoa Corporation - specializing in mining and producing raw aluminum, and Arconic - specializing in processing aluminum and other metals.

Headquarters: Pittsburgh, Pennsylvania, USA.
Founded: 1888
Revenue: < $9.3B

Marketing Cap: 11.07B

Website: https://www.alcoa.com/

United Company RUSAL is the world's second-largest aluminum producer by production volume, after being taken the lead by China Hongqiao Group. Rusal supplies 9% of the world's primary aluminum production. Legally, the company is incorporated in Jersey, which is owned by the United Kingdom but has its headquarters in Moscow, Russian Federation. As of September 25, 2020, the company changes its registered location from Jersey to Kaliningrad, Russia.

Rusal's main markets are countries in Europe, Russia and the Commonwealth of Independent States (CIS), North America, Southeast Asia, Japan, Korea,... Rusal operates in several fields such as mining and refining bauxite into alumina, engaged in the production and sale of primary aluminum and other related products.

Headquarters: Moscow, Russia.

Founded: 2007

Revenue: < $8.57B

Marketing Cap: 1.10T

Website: https://rusal.ru/