| Founded | 1913 |
| Registered | 1934 |
| Paid in Capital | 100 million yen |
| Sales | 5,600 million yen |
| Location | 1-1-12,Shinsayama,Sayama,Saitama,Japan |
| Employees | ２５３ : April 2020 |
| Production Items | Parts for Railroad Vehicle, Hydraulic Products, Parts for Commercial Vehicles, Hydraulic Products for Agriculteral Machinery, and for Construction machinery, Parts for Industrial Machinery. |
| July.1913 | Inaugurated as a company designated by the Ministry of Railways in manufacturing parts for railroad vehicle |
| May. 1927 | Renamed as Koshin Seikosho |
| June. 1934 | Renamed as Koshin Seikosho, Ltd. (capitalized at ￥250,000) |
| Feb. 1944 | Moved to Nukui-cho,Nerima-ku Tokyo. Head office and Nerima plant opened |
| Oct. 1968 | The first stage construction of Sayama Factory |
| Oct. 1968 | Based on a preceded license agreement and joint venture agreement ,established "Koshin-Racine,Ltd.),jointly owned by Koshin-Seikosho.,Ltd and Racine Hydraulics (now Bosch Rexroth) |
| May. 1976 | The capital increased to 100million yen |
| July. 1983 | Big assembly shop added to Sayama plant to take order and manufacture automobile-related machines. |
| July. 1986 | Started production and sales of Pipe Thread Rolling machine. |
| Oct. 1992 | Koshin Seikosho and Koshin-Racine were merged into one and called as Koshin Seikosho thereafter. |
| Oct. 1992 | Koshin Knorr Ltd. was established. It is a company jointly owned by Knorr Bremze AG, Koshin Seikosho Ltd. and Mitsui & Co, Ltd. |
| Oct. 1999 | Completed a development of the VE type pantograph for commuter train. |
| Aug. 2000 | Started a production in Dalian, China |
| Mar. 2001 | In Dalian,China, Production of oil hydraulic valves and cylinders started. |
| Sept. 2001 | ISO14001 authentication acquired. |
| Dec. 2001 | Started the sales activity to the agricultural machine field. |
| Jan. 2003 | Dalian Koshin Machinery Co.,Ltd. was established in the Dalian Economic and Technical Development Zone,China. |
| Dec. 2006 | Completed a development of the new type pantograph for N700 type Shinkansen "NOZOMI". |
| May. 2008 | The new factory of the Dalian Koshin Machinery Co., Ltd. completed. |
| AUG. 2010 | ISO9001 authentication acquired |
| June. 2013 | rating the 100th anniversary of its founding |
