EN / JP
| October 1968 | Founded: Yowa Industry, Ryosei Industry Injection molding plant completed, door trim line and urethane foaming line completed |
|---|---|
| February 1973 | Started production of instrument panels for compact passenger cars |
| February 1980 | Inauguration of Suiryo Plastics as a direct subsidiary of Mitsubishi Motors |
| June 1983 | Ceiling manufacturing plant completed (present-day No. 3 assembly plant) |
| July 1983 | PP coating plant completed |
| February 1987 | Concluded Contracts for Technical Assistance with THAI SUMMIT AUTOPARTS INDUSTRY and SUMMIT AUTO SEATS INDUSTRY, both of Thailand |
| May 1987 | Injection molding plant for large parts completed |
| February 1990～ April 1991 |
Concluded Contracts for Technical assistance with TECK SEE PLASTIC, AZMAN HAMZAH PLASTIK, RAYA PLASTIK INDUSTRY, CARINPA, and EP POLYMERS of Malyasia |
| September 1990 | Started production of the world's first instrument pad through the development of stamping press mold technology (SPM) with patents pending in 11 overseas countries |
| April 1991 | New small size injection molding plant completed (present No. 2 assembly plant) |
| April 1992 | Headquarter building and plant (approx. 9900 sqm.) completed, concentrated the computers, CAD/CAM, office works and Technology departments on the Intelligent Floor |
| October 1992 | Fully automated modern coating plant completed. |
| June 1993 | Concluded Contracts for license of stamping press mold technology ・technical assistance with SANKO GOSEI.UK of England |
| October 1993～ March 1998 |
Concluded Contracts for license of stamping press mold technology with PEGUFORM of Germany, INERGA of Spain, PLASTIMAT of Czech Republic, Tong Yang Industry of Taiwan, MAGNA of Canada, HICOM-TECK SEE MANUFACTURING of Malyasia |
| September 1997 | Expansion of west side of No. 1 Assembly plant completed |
| January 1999 | Kibi plant completed |
| June 2000 | Acquired ISO9001 Certification |
| June 2002 | Acquired ISO14001 Certification |
| September 2002 | Testing Lab completed |
| November 2002 | Mitsubishi Motors Corporation becomes 100% shareholder |
| May 2004 | Electrostatic coating line completed |
| December 2005 | Start operation of a 3,000-ton electric molding machine (world's first mass-produced machine: jointly developed with Mitsubishi Heavy Industries) |
| February 2006 | Start operation of a 850-ton electric molding machine |
| September 2006 | Start coating line operation of Kibi plant |
| April 2007 | Assembly plant of Kibi plant completed |
| June 2007 | Start operation of a 2,300-ton electric molding machine |
| May2008 | Start operation of a 1,600-ton and 2,300-ton electric molding machine |
| December 2008 | Air garden on the roof of the head office plant completed (global warming prevention measures) |
| January 2012 | Bumper shipping area of headquarter plant completed |
| March 2012 | Start operation of the security gate of headquarter plant |
| August 2012 | Concluded the cotract of development and technical assistance for Instrument panel with DajiangYuChyang Plastic Co. China |
| March 2013 | Completed Lay out for the shipping yard of Kibi plant |
| April 2013 | Start operation of HVAC assembly line |
| June 2013 | Start operation of Okazaki plant |
| September 2013 | Start operation of a 1,050-ton and 1,450-ton electric molding machine |
| April 2014 | Start operation of a 1,600-ton electric molding machine |
| October 2017 | Start operation of instrument panel facility of Okazaki plant |
| April 2019 | Start operation of a 3,500-ton electric molding machine |