Doi Quan Ly Thi Truong So 7 Address: Ha Thinh Hamlet, Son Thinh Commune, Son Thinh Commune, Van Chan District, Yen Bai Province Enterprise code: 5200315503 Phone: 02163874907 Representative: Vu Manh Thuc Adress: Son Thinh Commune, Son Thinh Commune, Van Chan District, Yen Bai Province Son Thinh Commune, Van Chan District, Yen Bai ProvinceFounding date: 5 - 2 - 2009