Ky Thuat Han Trinh Hai LTD Address: No 59, Lane 124, Nguyen Hoang Ton Street, Phu Thuong Ward, Tay Ho District, Ha Noi City Enterprise code: 0101493489 Phone: 0247534303 Representative: Nguyen Thi Anh Tuyet Phu Thuong Ward, Tay Ho District, Ha Noi CityFounding date: 7 - 6 - 2004