Tran Son Joint Stock Company Address: No 129a Nguyen Trai, Thuong Dinh Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0102401000 Phone: 0249232704 Representative: Vo Van Thinh Adress: No 6, 402 Bach Mai Lane, Bach Mai Ward, Hai Ba Trung District, Ha Noi City Founding date: 31 - 10 - 2007