Ban Quan Ly Du An Cong Trinh Huyen Tien Yen Address: Dong Tien Street, Tien Yen Town, Tien Yen Town, Tien Yen District, Quang Ninh Province Enterprise code: 5700961939 Phone: 02033876254 Adress: Thac Buoi 2 Hamlet, Tien Lang Commune, Tien Yen District, Quang Ninh Province Tien Yen Town, Tien Yen District, Quang Ninh ProvinceFounding date: 3 - 11 - 2008