Tu Van - Khao Sat Phuong Nam Joint Stock Company Address: No 87, Civil Group 10, Khu 4, Hong Hai Ward, Ha Long City, Quang Ninh Province Enterprise code: 5700898606 Phone: 02033611820 Representative: Pham Quy Vien Adress: Minh Tan Hamlet, Quang Minh Commune, Gia Loc District, Hai Duong Province Hong Hai Ward, Ha Long City, Quang Ninh ProvinceFounding date: 15 - 7 - 2008