Groupmech Corporation Ltd.
  25/11 Moo 8 Soi Chamchan (Sub Soi Ra-ngabthuk)
Kaset-Navamin Rd., Beungkum, Beungkum Bangkok 10230
Tel : 0-2508-0606, 0-2508-0809, 0-2508-0748, 0-2508-0696 Fax : 0-2508-0704
Email : gmech@samart.co.th