| 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 |
Built Technological Research Institute inside Head Office.[ Sambo Copper Alloy Co., Ltd. ] |
| 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 |
Established RYOSHINDOH MANUFACTURING (MALAYSIA) SDN. BHD.[ Mitsubishi Shindoh Co., Ltd. ] |
| 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. |
