- Codec technology co.,ltd
- Address:50125 M. 7 T. Klongsong A. Klongluang
- CEMTECH
- Address:122 Ddee
- POON-MECH co,Ltd
- Address:87 / 7 Mu 3 Taikao
- VIJIT KARNCHANG
- Address:RAMA2Rd.
- Terminalseal And Service Co.,Ltd
- Address:49 / 151 M, 12 Pradith-Manutham Road, Klongkum, Bungkum
- T.S.K. ENGINEERING CO.,LTD.
- Address:6 Moo 5, Nongree
- VM Design Co.,Ltd
- Address:9 / 197-198, Moo6 Banglamung
- G2 Petroleumn Co.,Ltd
- Address:209 Moo 9 Mittraphap Road, Amphur Ban Haet
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