Dau Tu Bac Son LTD Address: No 50, Civil Group 11, Khu Nui Trang, Phong Chau Town, Phu Ninh District, Phu Tho Province Enterprise code: 2600699400 Phone: 02103833368 Representative: Duong Hong Thu Adress: Hamlet 1, Mieu Nha Hamlet, Tay Mo Commune, Tu Liem District, Ha Noi City Phong Chau Town, Phu Ninh District, Phu Tho ProvinceFounding date: 13 - 9 - 2010