| 1973 |
Saikai Corporation was founded in Nihonbashi, Tokyo, Japan |
| 1974 (Oct) |
A rubber factory was established in Yashio, Saitama |
| 1976 (Oct) |
The factory was moved to Soka, Saitama |
| 1979 |
The company change its name to SAIKAI RUBBER CO. LTD. |
| 1982 (Jun) |
The secondary factory was additionally constructed in Soka |
| 1984 (Apr) |
The secondary factory was spun off into a separate company and named itself as SAIKAI MEDICAL CO. LTD. |
| 1986 |
The expansion of Saikai Rubber Co. Ltd.: Trimming & Inspection, Silk Printing, Raw material sections were added. |
| 1989 |
The expansion of Saikai Medical Co. Ltd.: Sponge & Sheets section was added. |
| 1991(Oct) |
Saikai Rubber Co. Ltd. built an additional factory, the secondary factory, in Soka for extended services |
| 1993 (Jul) |
A overseas factory in the Philippines was established in Laguna Technopark, Binan, called LAGUNA SAIKAI CO.LTD. |
| 1998 (May) |
Laguna Saikai Co. Ltd. added Clean Room for maximum quality output. |
| 1998 (Oct) |
Saikai Medical Co. Ltd. changed its name to SAIKAI CO.LTD. |
| 1999 (Mar) |
Saikai Rubber's secondary factory changed its name to SAIKAI Co. Ltd. Molder factory. |
| 1999 (May) |
A new section "Mold manufacturing section" was added to Saikai Co. Ltd. Molder factory |
| 1999 (Dec) |
The expansion of Saikai Co. Ltd: Elastomer & Resin Molding section was added. |
| 2003 (Mar) |
Laguna Saikai Co. Ltd. gained its accreditation for ISO 9001:2000 Quality Management System. |
| 2004 (Nov) |
New machines were added to Saikai Co. Ltd. Molder factory: NC machining center FANUC α-T14iD and Die-Sinking Electrical Discharge machining MITSUBISHI EA22E. |
| 2005 (Oct) |
The expansion of facilities in Saikai Co. Ltd.: NC Continuous Rapping machine SAKAMOTOZOKI PAL-500 |
| 2007 (Jan) |
The expansion of facilities in Saikai Co. Ltd.: Elastomeric Injection Molding machine FANUC S-2000i50B |
| 2007 (Mar) |
Laguna Saikai Co. Ltd. gained its accreditation for ISO 14001:2004 Environmental Management System. |
