To Hop Tac Dung Nuoc Thon Tan Son Address: Tan Son Hamlet, Trung Son Commune, Viet Yen District, Bac Giang Province Enterprise code: 2400572421 Phone: 0986376758 Representative: Nguyen Van Mien Adress: Tan Son Hamlet, Trung Son Commune, Viet Yen District, Bac Giang Province Trung Son Commune, Viet Yen District, Bac Giang ProvinceFounding date: 3 - 11 - 2011