Kien Truc Va Xay Dung Bac Son Joint Stock Company Address: KM 7, 21a Street, Tan Phu Hamlet, Son Dong Commune, Son Tay Town, Ha Noi City Enterprise code: 0500571523 Phone: 0243686294 Representative: Vuong Duy Vuong Adress: Hamlet 8, Thach Hoa Commune, Thach That District, Ha Noi City Son Dong Commune, Son Tay Town, Ha Noi CityFounding date: 2 - 11 - 2007