V.S. Chem House Floor3 24 Rama 1 Rd., Rongmuang, Pathumwan, Bangkok 10330, Thailand

Tel. (66)2-613-7960-3, (66)2-613-7712-5, (66)2-214-3446-7

Fax. (66)2-215-4949, (66)2-214-3446-7

Email : hess.marketing@hess.co.th