in the 1930

April, 1931

Aluminium Sumitomo Limited was incorporated for the purpose of fabrication and sales of aluminium sheet and foil under the technical and capital tie-ups between Aluminium Limited (currently Alcan Aluminium Limited), Canada and Sumitomo.

in the 1950

April, 1950	By the dissolution of Zaibatsus, the Company was renamed to Toyo Aluminium K.K. (OLD TOYO ALUMINIUM)
January, 1955	In commemoration of silver jubilee, the Company established The Light Metal Educational Foundation, Inc., the leading science promoting foundation sponsored by private enterprise in Japan. The Foundation has been contributing to promote research and technology on light metals by donating educational research fund, research subsidy as well as offering scholarships to able students.
July, 1957	The Company started production of aluminium paste at the newly constructed Tatsuta Plant in Nara Pref.

in the 1960

April, 1966	For the purpose of sales reinforcement, the Company established Piyasu Shoji K.K. (later renamed to Toyo Aluminium Shoji K.K.) as sales agent.
October, 1968	For the purpose of producing aluminium powder, Shinjo Plant was constructed in Nara Pref.
November, 1969	The Company established Toyo Ekco Co., Ltd. under a joint venture agreement with Ekco Products, Inc. (currently Packaging Corporation of America), U.S.A., for the purpose of production and sale of foil containers and its newly constructed Shiga Plant started operation immediately.

in the 1970

January, 1970	For the purpose of aluminium foil rolling and converting, Sam-A Aluminium Co., Ltd. was established in Korea under a joint venture agreement with Samjin Aluminium Co., Ltd.
May, 1976	Toyo Aluminium Foil Products K.K. was established for the purpose of sale and processing of household goods.
April, 1977	All the equipment in Tatsuta Plant, which was closed down, was transferred to Shinjo Works.
October, 1978	Aiming to reinforce the sales activity of converted foil in Tokyo area, Gumma Plant was constructed.

in the 1980

July, 1982	Alcan-Toyo Europe S.A. (currently Toyal Europe S.A.) was established in France under a joint venture agreement with Aluminium Alcan de France, as a base of production and sale of aluminium powder and paste business in Europe.
December, 1982	Hino Plant, a newly integrated atomized aluminium powder plant, was constructed in Shiga Pref.
July, 1987	Alcan Toyo America, Inc. (currently Toyal America Inc.) was established in U.S.A. under a joint venture agreement with Alcan Aluminium Corporation, as a base of production and sale of aluminium powder and paste business in North America.

in the 1990

August, 1996	Nippon Light Metal Co., Ltd, acquired the Company's 27,090,000 shares owned by Alcan Aluminium Limited.
May, 1999	The Company established Toyo Aluminium Sales K.K.
October, 1999	Nippon Light Metal Co., Ltd. merged the Company, and the Company was dissolved.
October, 1999	Toyo Aluminium Sales K.K. took over a part of business form (old) Toyo Aluminium K.K. and renamed to Toyo Aluminium K.K. (hereinafter called as the Company), the Company commenced operation.

in the 2000

October, 2002	Toyo Aluminium K.K. took over manufacturing division of Aluminium foil, powder and paste from Nippon Light Metal Co., Ltd.
April, 2006	Toyo Ekco Co., Ltd. and Toyo Aluminium Foil Products K.K. merged to form Toyo Aluminium Ekco Products Co., Ltd.
April, 2007	We have founded Toyal Zhaoqing Co., Ltd., manufacturing and sales company of aluminium paste in Guangdong, China.
October, 2007	We have made Tokai Aluminum Foil Co., Ltd. a subsidiary of our company, and have taken over the shares thereof from Nippon Light Metal Co., Ltd.
December, 2007	We have taken over the shares of Millennium Gate Technology Co., Ltd. and made it our subsidiary company in order to manufacture colored metallic paints (prigments).
April, 2008	Toyo Aluminium Shoji K.K. has changed its name to Toyo Tokai Aluminum Hanbai K.K. due to acquiring a part of foil converting sales division of Tokai Aluminum Foil Co., Ltd.
June, 2008	We reached an agreement with Sumikei Aluminum Foil Co., Ltd. on forming an alliance of a production department which belongs to high-purity foil business division.
December, 2009	We have made Hunan NingXiang JiWeiXin Metal Powder Co.,Ltd., which is manufacturing and sales company of aluminium powder in Hunan, a subsidiary of our company.

in the 2010

April,2011

We have made SHOWA ALUMINUM POWDER K.K. a subsidiary of our company.