Dau Tu Va Thuong Mai Tam Son LTD Address: No 5, Ton Duc Thang Street, Quoc Tu Giam Ward, Dong Da District, Ha Noi City Enterprise code: 0101848364 Phone: 0246243786 Representative: Trinh Hoai An Adress: P201, C1, Ngoc Khanh Town, Ngoc Khanh Ward, Ba Dinh District, Ha Noi City Quoc Tu Giam Ward, Dong Da District, Ha Noi CityFounding date: 3 - 1 - 2006