Khao Sat Thiet Ke Thang Long LTD Address: 17 Doan Nhu Hai, Ward 12, District 4, Ho Chi Minh City Enterprise code: 0301440822 Phone: 02838262068 Representative: Pham Thu Nguyet Adress: 39 Nguyen Tat Thanh, Ward 13, District 4, Ho Chi Minh City Ward 12, District 4, Ho Chi Minh CityFounding date: 1 - 12 - 1998