Established Sumitomo Copper Rolling Works in Osaka to commence copper rolling operations.
1898
Commenced aluminum rolling operations at same plant.
Sep. 1935
Established Sumitomo Metal Industries Co. Ltd. through merger of Sumitomo Steel Tube and Copper Works and Sumitomo Steel Works Co., Ltd.
Sep. 1941
Constructed Nagoya Light Alloy Works.
Aug. 1959
Copper products and aluminum divisions split of from Sumitomo Metal Industries to form Sumitomo Light Metal Industries Co., Ltd. (commencing operations Sep. 1).
Feb. 1964
Listing upgraded to the First Section of the Tokyo Stock Exchange.
Jun. 1966
Commenced operation of new aluminum hot rolling equipment.
Mar. 1969
Constructed state-of-the-art copper tube factory in the Hoi District of Aichi Prefecture (currently Toyokawa City) to expand wrought copper operations.
May 1979
Established Sumikei Aluminum Foil Co., Ltd.
Aug. 1979
Established SLM Australia in order to participate in Comalco Limited’s aluminum refinery project in Gladstone, Australia.
Feb. 1990
Established Sumikei Malaysia Sdn. Bhd.
Sep. 1993
Modernized Nagoya Works aluminum rolling equipment.
Nov. 1995
Established Sumikei (Guangzhou) Metal Products, Ltd.
Aug. 2000
Established Sumikei Engineering Co., Ltd. through joint venture with Nippon Light Metal Company.
Oct. 2002
Established Sumikei Techno Czech s.r.o.
Oct. 2009
Established Nippon Aluminum (currently UACJ Metal Components) Group.
Apr. 2010
Established Sumikei Techno Group.
Aug. 2011
Jointly acquired shares with five companies including Furukawa-Sky Aluminum Corp. in U.S. rolled aluminum sheet manufacturer and supplier Tri-Arrows Aluminum Inc.