Dau Tu Khoang San Kim Son Joint Stock Company Address: No 374, Dai Lo Nguyen Thai Hoc, 36B Civil Group, Hong Ha Ward, Yen Bai City, Yen Bai Province Enterprise code: 5200281607 Phone: 02166271123 Representative: Nguyen Ngoc Tu Adress: A3-B2, Lane 27, Cat Linh Street, Cat Linh Ward, Dong Da District, Ha Noi City Hong Ha Ward, Yen Bai City, Yen Bai ProvinceFounding date: 8 - 11 - 2007