Khoa Hoc San Xuat Quang Hoc Joint Stock Company Address: No 6B, Lane 209, Cau Giay Street, Dich Vong Ward, Cau Giay District, Ha Noi City Enterprise code: 0100109360 Phone: 0247564819 Representative: Vu Xuan Quang Adress: P307-B3 Tap The Nghia Tan, Nghia Tan Ward, Cau Giay District, Ha Noi City Dich Vong Ward, Cau Giay District, Ha Noi CityFounding date: 21 - 5 - 1998