Khai Thac Xay Dung Nam Son Joint Stock Company Address: KM 6 + 500 Nga Tu, 21a Street, Nam Phuong Tien Commune, Chuong My District, Ha Noi City Enterprise code: 0500435545 Phone: 02433840271 Representative: Hoang Cong Tinh Adress: Doi Mit Hamlet, Nam Phuong Tien Commune, Chuong My District, Ha Noi City Nam Phuong Tien Commune, Chuong My District, Ha Noi CityFounding date: 20 - 3 - 2003