OEG (Head Office) 170/14 6th floor Ocean Tower 1 Building, New Ratchadaphisek Road, Khwaeng Khlong Toei , Khet Khlong Toei, Bangkok 10110 Phone: +66 (0) 2661 8990 Fax: +66 (0) 2661 8991 OEG (Site offices) ROJANA INDUSTRIAL PARK (SPP1) 1/73 Village No. 5 Rojana Industrial Park 1Rojana road, Tambon Khan Ham, Amphoe Uthai, Phra Nakhon Si Ayutthaya Province 13210 Phone: +66 (035) 226 816-22 Fax: +66 (035) 227 845-6 ROJANA INDUSTRIAL PARK (SPP2) 91/9 Village No. 9 Rojana Industrial Park 2, Rojana road, Tambon Khan Ham, Amphoe Uthai , Phra Nakhon Si Ayutthaya Province 13210 Phone: +66 (035) 719 300 Fax: +66 (035) 719 291 ROJANA INDUSTRIAL PARK (SPP3) 11/2 Moo 4, Rojana Industrial Park 3, Rojana Industrial Park 3, Tambon Uthai, Amphoe Uthai , Phra Nakhon Si Ayutthaya Province 13210 Phone: +66 (035) 352 909, +66 (035) 035 352 905 Fax.: +66 (035) 352 907 (CCR) SAHAPHAT GROUP INDUSTRIAL ESTATE 636 Moo11, Sukhaphiban 8 road, Tambon Nongkham, Amphoe Si Racha, Chonburi Province 20230 Phone: +66 (038) 481 548-50 Fax: +66 (038) 481 546 RATCHABURI INDUSTRIAL ESTATE 155/115 Ratchaburi Industrial Estate, Moo 4, Tambon Chet Samian, Amphoe Photharam, Ratchaburi Province 70120 Phone: +66 (032) 919 988 Fax: +66 (032) 919 997