| 1941.10 | We started off from the personal business of former chairman, the late Mr. Kuwana Tsunekichi, by the company name of Fuso Die Cast Industry at Osaka City Nishinari Ward Nagahashi Street |
| 1951.06 | To achieve the stepped-up production, we moved to Idei Sakai City, Nakatadei-Cho (present headquarters) |
| 1955.02 | Reorganization to Soritsu Die Cast Industries Co., Ltd. |
| 1962.07 | In order to implement integrated production of "mold fabrication - casting - machining", we aimed for the expansion of business coverage and new facilities of Kuroyama factory at Osaka Prefecture Minamikawachi-gun Mihara-town |
| 1966.11 | An affiliated factory (Fuso Metal Industries) was consolidated and put under Sakai factory operation |
| 1967.11 | In order to achieve corporate rationalization, Kuroyama factory was expanded and all of the Sakai factory was relocated. New plating factory was established inside Kuroyama factory |
| 1976.04 | Amalgamation company Sovine Die Casting Co. established in Pennsylvania, United States of America |
| 1979.08 | Molding division split and Sakai Engineering Co., Ltd. Established |
| 1981.05 | Aluminum factory established to expand our business coverage |
| 1983.09 | Exchanged technology collaboration agreement with China Precision Die Casting Co., Ltd., Taiwan |
| 1985.05 | Import business became full-scale which was concerned with overseas daily miscellaneous goods and power supply code |
| 1986.03 | Assembly and sales of camera tripods |
| 1987.08 | With the aim of business diversification, company name was changed to Soritsu Co., Ltd. |
| 1990.08 | Overseas subsidiary PROGRESS & PRECISION SDN. BHD. (abbreviation: P&P) established in Penang, Malaysia |
| 1991.10 | The 50th anniversary of founding ceremony was held |
| 1992.11 | Mold fabrication company, Obama Engineering Ltd. established in Fukui Prefecture Obama City |
| 1999.07 | P&P dissolved and SOIRITU TECHNOLOGY MALAYSIA SDN. BHD. (abbreviation: STM) established in Penang, Malaysia |
| 1999.12 | Operation started at STM mentioned above |
| 2001.11 |
Affiliated companies STM awarded ISO9001 Certification |
| 2001.12 | In conjunction with business expansion of STM, we moved to newly established office building and factory |
| 2002.04 | Soritsu Co., Ltd., together with affiliated companies Sakai Engineering Ltd. and Obama Engineering Ltd., awarded ISO14001 Certification at the same time |
| 2003.05 | IYO CHEMICAL INDUSTRY MALAYSIA became subsidiary under M&A |
| 2004.07 | All Zinc die cast machines removed and we specialize in Aluminum die cast |
| 2006.03 | Sakai Engineering Co., Ltd. (affiliated company) increased its capital to 30 million Yen. |
| 2006.04 | The main office was relocated from 1-1-4 Nakatadei-cho, Sakai-ku, Sakai-city to 655 Tai, Mihara-ku, Sakai-city (the same location as that of our sales office and plant) |
| 2007.12 |
Norifumi Kuwana appointed Chairman,and |
| 2011.09 | Soritsu(Thailand)Co.,Ltd established a subsidiary in Bangkok, Thailand |
| 2014.11 | Soritsu Trading (Thailad)Co.,Ltd established a subsidiary in Bangkok, Thailand |
| 2015.02 | Keiko Kuwana appointed President. |