History

1940
Kansai Light Metal Reproduction Industry Co., Ltd. established from the former Recycled Aluminum Industry.
1941
Merged with Imperial Aluminum Control Co., Ltd. (later, Light Metal Control Association) under state control.
1946
Reestablished due to the post-war decontrol, and later changed its name to Kansai Light Metal Co., Ltd.
1972
Ibaraki Plant completed (formerly, Kansai Light Metal Co., Ltd.)
1980
Shinshiro Plant completed (formerly, Sumi-Al Alloy Co., Ltd.)
1982
Shiga Plant completed (formerly, Kansai Light Metal Co., Ltd.)
1991
The former Kansai Light Metal Co., Ltd. and the former Sumi-Al Alloy Co., Ltd. (established in 1970) merged equally to start Summit Aluminum Co., Ltd.
2001
The Shiga and Shinshiro plants obtained "ISO 14001" certification.
2002
The Ibaraki Plant obtained "ISO 14001" certification.
2004
All Shiga, Shinshiro, and Ibaraki plants as well as the Head Office (in Osaka) and Tokyo and Nagoya Offices obtained "ISO 9001" certification.
2006
Showa Light Alloy Co., Ltd. (established in 1986), a wholly owned subsidiary of Showa Denko, integrated the virgin alloy ingot business. The company name changed to Summit Showa Aluminum Ltd.
2013
The company name changed to S.S.ALUMINUM CO., LTD. when the shareholders changed to ASAHI SEIREN CO., LTD.
2017
ISO 14001 certification consolidated for the Shiga, Shinshiro, and Ibaraki plants.

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