|1961||Eastern Metal Industry Co. Ltd. founded at 2473 Chino, Chino City, Nagano Prefecture with a capital of 2.5 million yen.|
|1965||Production of plated through hole (PTH) Printed Wiring Boards (PWBs) started after completion of their technical development.|
|1966||DEX-1 switching system using Eastern's PTH PWBs is installed and begins trial operation at Ushigome Post Office in Tokyo.|
|1969||Air conditioning and hydraulic eight-layer lamination press installed and production of multilayer boards (MLBs) started following development of same.|
|1973||Company name changed to Eastern Company Ltd.|
|1992||Shionome Factory (Electronic Equipment Division) constructed in Toyohira, Chino City.|
|1995||Printed Wiring Division acquires ISO9001 certification.
Eastern Mfg (H.K.) Co. Ltd. established in Hong Kong.
|1996||Electronic Equipment Division acquires ISO9001 certification.|
|1997||PWB factory (Second Shionome Factory) constructed at Shionome site.|
|1998||PWB factory and new headquarters administration building constructed.|
|2000||Malaysia office established.|
|2001||Headquarters and Shionome Factory acquires ISO14001 certification.
EASTERN ELECTRONICS TECHNOLOGY (SHEN ZHEN) CO., LTD established in Shenzhen, China.
|2002||Singapore office established.
U.S. office established in Washington, United States.
|2003||DONGGUAN EASTERN ELECTRONICS CO., LTD established in Dongguan, China.|
|2005||Eastern Yonezawa Factory established by merging affiliate company, SANZE INDUSTRIAL CO., LTD.|
|2007||Korea office established.|
|2008||Kesaji Ushiyama, Corporate Adviser, was awarded the Gold and Silver Rays Medal of the Order of the Rising Sun.|
|2010||Eastern acquired a new facility in Nakaohshio area of Chino city. (Eastern Nakaohshio factory)|
|2013||Capital and business alliance with NGK SPARK PLUG CO., LTD.|
|2016||Eliminate capital and business alliance with NGK SPARK PLUG CO., LTD.
Capital and business alliance with SIMMTECH CO., LTD.
Company split of power system business.
|2020||Changed company name to SIMMTECH GRAPHICS Co., Ltd.|