Cty TNHH MTV Dau Tu Thuong Mai Dich Vu Tin Hoc Duy Hung Address: 77 Son Ky, Son Ky Ward, Son Ky Ward, Tan Phu District, Ho Chi Minh City Enterprise code: 0309591245 Phone: 0937405799 Representative: Bui Van Sang Adress: 77 Son Ky P.Son Ky, Tan Phu District, Ho Chi Minh City Son Ky Ward, Tan Phu District, Ho Chi Minh CityFounding date: 4 - 11 - 2009