Thanh Son LTD Address: Tram Tau Town, Tram Tau District, Yen Bai Province Enterprise code: 5200213149 Phone: 0913013133 Representative: Nguyen Van Thanh Adress: Civil Group 8, Trung Tam Ward, Nghia Lo Town, Yen Bai Province Tram Tau Town, Tram Tau District, Yen Bai ProvinceFounding date: 13 - 6 - 2003