Meyer Industries Limited
18
14
Siam Compressor Industry Co.,Ltd
8
2
Kimball Electronics (Thailand) Limited
8
1
Celestica (Thailand) Limited
3
1
Valmet (Thailand) Co., Ltd.
2
2
Summit Showa Manufacturing Co.,Ltd
2
2
VIKING Life-Saving Equipment (Thailand) Ltd.
1
8
SUMMIT ANSEI AUTO PARTS CO.,LTD.
1
1
Mitsubishi Motors (Thailand ) Co.,Ltd.
1
2
Thai Summit Mitsuba Electric Manufacturing Co., Ltd.
1
1
Thai Summit Harness Public Company Limited
1
1
Hadley (Thailand) Limited
1
1
บริษัท ไวซ์เทค โซลูชั่นส์ (ประเทศไทย) จำกัด
1
1
Fujitsu General Air Conditioning R&D (Thailand) Co., Ltd
1
3