Tu Van Thiet Ke Va Xay Dung Long Yen LTD Address: 31/5, Nguyen Dinh Chieu Street, Lam Vien - Da Lat Ward, Da Lat City, Lam Dong Province Enterprise code: 5801570787 Phone: 0348793268 Representative: Vo Thanh Duc Da Lat City, Lam Dong ProvinceFounding date: 7 - 4 - 2026