TRI PETCH ISUZU SALES CO.,LTD.
ISUZU MOTOR CO.,(THAILAND)LTD.
TOYOTA MOTOR THAILAND CO.,LTD.
TOYOTA  AUTO WORK CO.,LTD.
TOYOTA  DAIHATSU ENGINEERING & MANUFACTURING CO.,LTD.
DENSO TEN(THAILAND)LIMITED.
VUTEQ THAI CO.,LTD.
THAI INTERNATIONAL DIE MAKING CO.,LTD.
SHONAN UNITEC (THAILAND)CO.,LTD.
ISUZU ENGINE MANUFACTURING CO., LTD.
NOMURA SIAM INTERNATIONAL CO.,LTD.
KAWABE PRECISION (THAILAND)CO.,LTD.
SIAM STERI SERVICES CO.,LTD.
NIKKI FRON (THAILAND) CO,LTD.
DAIKIN INDUSTRIES(THAILAND)LTD.
SARAYA  MFG.(THAILAND)CO.,LTD.
HANWA STEEL SERVICE (THAILAND) CO.,LTD.
AMATA FACILITY SERVICE CO., LTD.
APOLLO (THAILAND ) CO.,LTD.
J.FILTER CO.,LTD.
STERIS TOMOE (THAILAND) LTD.
KROMADIT PARK CO.,LTD.
MELTEC PARTS & ENGINEERING CO.,LTD.
KTX THAI CO.,LTD.
SMC (THAILAND) LTD.
SIAM CITY CONCRETE CO., LTD.
SYNERGY HEALTH (THAILAND) LTD.
TAKEBE (THAILAND)CO.,LTD.