- Singapore
- Hong-Kong
- India
- Vietnam
- Cambodia
- Qatar
- Malaysia
- Philippines
- Singapore Branch Office
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Add. The Adelphi 1 Coleman Street#09-08 Singapore 179803 Tel. 65-6745-6530
- Hong-Kong Branch Office
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Add. FLAT/RM 16-20 17/F TUEN MUN CENTRAL SQUARE 22 HOI WING ROAD, TUEN MUN, NT Tel. 852-3702-1278
- DONGAH GEOLOGICAL ENGINEERING INDIA PRIVATE LIMITED
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Add. #329, 3rd Floor, Tower-B, SPAZEDGE, Sector-47, Gurgaon-Sohna Road, Gurgaon - 122018, Haryana, India Tel. 91-124-481-6748~9
- DONG AH VINA GEOLOGICAL ENGINEERING COMPANY LIMITED
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Add. 1st Floor A1 House 43-45, Alley 130 Doc Ngu, Ba Dinh District, HaNoi, Viet Nam Tel. 84-4-3726-3620
- Cambodia branch Office
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Add. IOC Center, 6F-R02, No.254, Monivong Blvd, Sangkat Beong Raing,Khan Duan Penh, Phnom Penh, Cambodia Tel. 855 (0)92-478-377
- Qatar Branch Office
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Add. P.O. Box 75362, Building No. 8, IBN Nashal Street 41, Zone 915, Al Hilal Western, Doha-Qatar Tel. 974-4490-1565
- Malaysia Branch Office
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Add. Lot 19, 21&22-ACD, Level 5 Suite A, Menara Pandan B, Persiaran MPAJ,Jalan Pandan Utama, Pandan Indah, 55100 Kuala Lumpur, Malaysia Tel. 60-3-2695-3168
- Philippines Branch Office
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Add. Unit1, The Junction Strip Mall, Carmelray Industrial Park1, Carmelray Ave. corner Wisdom Ave. Canlubang, CITY OF CALAMBA, LAGUNA, Philippines Tel. getting ready for tel number