Our Location Sumitomo Heavy Industries (Thailand) Ltd. (Head Office) 23rd Floor, Unit 2309-2310, Bhiraj Tower at Emquartier689 Sukhumvit Road, Klongton Nuea, Vadhana,Bangkok 10110ThailandTel. +66-(0)2-261-3720Fax. +66-(0)2-261-3722
