Vien Thong Dai Viet LTD Address: Hamlet 6, Gioi Phien Commune, Yen Bai City, Yen Bai Province Enterprise code: 5200471189 Phone: 0902198787 Representative: Tran Ngoc Linh Adress: Hamlet 6, Gioi Phien Commune, Yen Bai City, Yen Bai Province Gioi Phien Commune, Yen Bai City, Yen Bai ProvinceFounding date: 4 - 11 - 2009