Tu Van Khao Sat Thiet Ke Va Thuong Mai Thanh An Joint Stock Company Address: Khu Go Meo, Tay Son Street, Phung Town, Dan Phuong District, Ha Noi City Enterprise code: 0105600269 Phone: 02433638837 Representative: Bui Van Thang Adress: Phuong Tri Hamlet, Phung Town, Dan Phuong District, Ha Noi City Phung Town, Dan Phuong District, Ha Noi CityFounding date: 31 - 10 - 2011