Khoang San Thien Viet Joint Stock Company Address: Civil Group 2, Quang Son, Viet Quang Town, Bac Quang District, Ha Giang Province Enterprise code: 5100254399 Phone: 0219821280 Representative: Pham Quang Dat Adress: No M10/266 Tran Nguyen Han, Le Chan District, Hai Phong City Viet Quang Town, Bac Quang District, Ha Giang ProvinceFounding date: 8 - 9 - 2008