Xay Dung Mat Ngoc Joint Stock Company Address: No 419 6 Khu Van Yen Civil Group, Viet Hung Ward, Ha Long City, Quang Ninh Province Enterprise code: 5701864906 Phone: 02033820899 Representative: Bui Thanh Chung Viet Hung Ward, Ha Long City, Quang Ninh ProvinceFounding date: 5 - 5 - 2017