| 1973 | Established Nishizawa Iron Works |
| Started production of equipment for Daiwaseikan Co., Ltd. | |
| 1980 | Started making grinders |
| 1987 | Moved to 6-5 Tsukiji-cho, Shimizu-ku, Shizuoka-shi |
| Changed name to Seishimachine Co., Ltd. |
| 1973 | Established Nishizawa Iron Works |
| Started production of equipment for Daiwaseikan Co., Ltd. | |
| 1980 | Started making grinders |
| 1987 | Moved to 6-5 Tsukiji-cho, Shimizu-ku, Shizuoka-shi |
| Changed name to Seishimachine Co., Ltd. |