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