Chi Nhanh Cong Ty Co Phan Dau Tu Xay Dung Va Dich Vu Thuong Mai Tan Hoang Son Address: No 299 Civil Group 1, Dong Van Town, Dong Van District, Ha Giang Province Enterprise code: 0201722975-002 Phone: 0913376323 Representative: Nguyen Thi Kim Dung Dong Van Town, Dong Van District, Ha Giang ProvinceFounding date: 17 - 5 - 2022