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55 Nam Ngu, Hoan Kiem District, Ha Noi
+ 84 4 3933 3110  –  Fax: + 84 4 3933 3078
info@gtc.vn
www.gtc.vn

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46 Dang Thi Nhu,  Nguyen Thai Binh Ward, District 1, Ho Chi Minh City
+ 84 8 3915 2233  –  Fax: + 84 8 2915 2091