Energy Systems Co.,Ltd. is a Board of Investment (BOI) promoted contract Manufacturing and supplier of manufacturing and engineering services to the electronics industry, concerned with the manufacture and testing of printed circuit boards assemblies and turnkey manufacturing , including finished products.

Energy Systems Co.,Ltd was established in October 1993. Operating on a 300 sq meter site in KhonKaen. Currently employing over 37 staff working 16 hours on a double 8 hour shift system