Dau Tu Phat Trien Y Te Ngoc Son LTD Address: No 252, Hoang Van Thu Street, That Khe Town, Trang Dinh District, Lang Son Province Enterprise code: 4900882471 Phone: 0877836999 Representative: Do Ngoc Son That Khe Town, Trang Dinh District, Lang Son ProvinceFounding date: 2 - 11 - 2021