OPK MARKETING SERVICES (THAILAND) CO., LTD.
Siam Tamiya Co., Ltd.
T.H. ENGINEERING & SERVICE CO., LTD.
K&W Global Technology (Thailand) Co., Ltd.
Nandee-Strapac Co., Ltd.
VEGA Instruments Co., Ltd.
Fuji Seal Engineering Co., Ltd.
Alliance Technology Co., Ltd.
AMMEGA (THAILAND) CO., LTD.
ENDRESS+HAUSER (THAILAND) LTD.
Erawan Union Co., Ltd.
Provisur Technologies (Thailand) Ltd.
TOPACK CO., LTD.
Kurz (Thailand) Ltd.
WEBER MARKING SYSTEMS (THAILAND) LTD.