Ky Thuat O To SHD Joint Stock Company Address: No 63, 6a To 20 Lane, Trung Phung Ward, Dong Da District, Ha Noi City Enterprise code: 0104026098 Phone: 02439975372 Representative: Tran Viet Son Adress: No 63, 6a Lane, Trung Phung Ward, Dong Da District, Ha Noi City Trung Phung Ward, Dong Da District, Ha Noi CityFounding date: 3 - 7 - 2009