Ky Thuat Chinh Thang Joint Stock Company Address: Nha A9, Civil Group 56, Khu Tap The Bo Cong An, Cau Giay District, Ha Noi City Enterprise code: 0100819716 Phone: 0249745910 Representative: Nguyen Thanh Tan Adress: No 20, Alley 11/5, To Ngoc Van Street, Tay Ho District, Ha Noi City Cau Giay District, Ha Noi CityFounding date: 8 - 2 - 1999