- Samchai Infratech Co., LTD.
- Address:471 Moo. 6 Praksa Rd.
- Sankho Kaihatsu Co., Ltd.
- Address:14/10 Moo1 Soi Pathai-pamuang, Phaholyothin Rd, T. Klong Nueng, A.
- Rhetoric Company
- Address:178/43Rama2 Rd,, Bangkok, Thailand
- GCP Asia Co., Ltd.
- Address:205/166 Srinakarin, Bangkok, T. Bangmuang, Thailand
- Vivergy Co.,Ltd.
- Address:sukumvit, bangkok, bangkok, Thailand
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