Trung Tam Cong Nghe Dia Chat - Khoang San Address: KM 9, Nguyen Trai Street, Thanh Xuan District, Ha Noi City Enterprise code: 0500237455-003 Phone: 0248544386 Representative: Tran Ngoc Thai Adress: KM 9, Nguyen Trai Street, Thanh Xuan District, Ha Noi City Thanh Xuan District, Ha Noi CityFounding date: 2 - 3 - 2011