Thuong Mai Son Thach Joint Stock Company Address: Lot 13, Song Khe Industrial Zone, Noi Hoang Commune, Yen Dung District, Bac Giang Province Enterprise code: 2400336294 Phone: 0912377794 Representative: Ngo Hong Tien Adress: Thuong Thang, Hop Thinh Commune, Hiep Hoa District, Bac Giang Province Noi Hoang Commune, Yen Dung District, Bac Giang ProvinceFounding date: 29 - 4 - 2005