1896年 Transfer of management to Mitsubishi Goshi Kaisya
1902年 Commenced commercial production of ingots by mold casting of copper cathode
1925年 Established with capital of 300 thousand yen, named DAI-ICHI SEIHYO CO., LTD.[ Mitsubishi Shindoh Co., Ltd. ]
1930年 Renamed as DAI-ICHI SANGYO CO., LTD.[ Mitsubishi Shindoh Co., Ltd. ]
1935年 Commenced manufacturing of copper alloy products (mainly copper and brass rod and sheet) with capital of 200 thousand yen.[ Sambo Copper Alloy Co., Ltd. ]
1937年 Wakamatsu Factory (currently as Wakamatsu Plant) was established. Nonferrous metal rolling business was started. Capital increased to 2 million yen.[ Mitsubishi Shindoh Co., Ltd. ]
1942年 Renamed as NISSO WORKS CO., LTD.[ Mitsubishi Shindoh Co., Ltd. ]
1950年 Commenced production of billets
1952年 Commenced production of wirerods by hot rolling of copper bar
1954年 Expansion into metallization industry.[ Mitsubishi Shindoh Co., Ltd. ]
1954年 Built status as general copper alloy manufacturer covering all copper alloy products such as sheet and plate, strip, pipe, rod and bar, and wire.[ Sambo Copper Alloy Co., Ltd. ]
1957年 Renamed as TAMAGAWA METAL & MACHINERY CO., LTD.[ Mitsubishi Shindoh Co., Ltd. ]
1970年 Installed industry-first 3,000 ton extruder.[ Sambo Copper Alloy Co., Ltd. ]
1971年 Commenced production of wirerods by SCR, which was developed by Southwire Company in the U.S.
1972年 Commenced production of lead frame materials for semiconductors.[ Mitsubishi Shindoh Co., Ltd. ]
1974年 本社内に技術研究所を設置しました。[サンボ銅合金株式会社]
1976年 Commenced production of wirerods by DIP Forming Process, which was developed by General Electric Corporation in the U.S.
1986年 Renamed as MITSUBISHI SHINDOH CO., LTD.[ Mitsubishi Shindoh Co., Ltd. ]
1989年 Started operation of 12-stage cold rolling mill[ Sambo Copper Alloy Co., Ltd. ]
1989年 Moved and Started new operation as Sakai Plant
1995年 RYOSHINDOH MANUFACTURING(マレーシア)SDN. BHD.(ミツビシ シンドウ株式会社)設立
2000年 Commenced production of ROX® which is oxygen-free copper wirerod by employing copper melting shaft furnace.
2000年 Obtained certification of ISO14001 at Sakai Plant.
2001年 GOTOH MFG CO., LTD. and GOTOH PHILIPPINES CORPORATION became our subsidiaries.[ Mitsubishi Shindoh Co., Ltd. ]
2001年 Developed EcoBrass lead-free brass alloy
2002年 Obtained certification of ISO9001 at Sakai Plant.
2003年 Obtained the ISO 14001 certification at Wakamatsu Plant.[ Mitsubishi Shindoh Co., Ltd. ]
2003年 Transferred forging business to Sambo Forging Co., Ltd.[ Sambo Copper Alloy Co., Ltd. ]
2004年 Commenced production of oxygen-free copper billets and cakes by employing copper melting shaft furnace.
2004年 Started Copper & Copper Alloy Development Center at Onahama Plant.
2005年 Installed and started operations of new No. 2 AP Line[ Sambo Copper Alloy Co., Ltd. ]
2006年 Became a wholly-owned subsidiary of Mitsubishi Materials Corporation.[ Mitsubishi Shindoh Co., Ltd. ]
2007年 Became a wholly-owned subsidiary of Mitsubishi Materials Corporation.[ Sambo Copper Alloy Co., Ltd. ]
2010-03-19 Installed and started opetation of New Rolling Facilities in Sambo Plant.
2013年 Commenced production of copper alloy wires made with ROX
2015年 Amagasaki Electric Wire becomes a subsidiary
2017年 Acquired the Special Products Division of the Luvata Group, which specializes in the processed copper products
2020年 Copper and Copper Alloy business of MMC has launched new era.
2026年 Renamed to Copper and Copper Alloy Products.
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