Truyen Thong Va Dich Vu Giai Tri O.P.E.N Joint Stock Company Address: Phong A109, Nha D5 Nguyen Phong Sac Noi Dai, Dich Vong Hau Ward, Cau Giay District, Ha Noi City Enterprise code: 0102081216 Phone: 0982011520 Representative: Bach Ngoc Tu Adress: U5 Cu Xa Bac Hai, Ward 15, District 10, Ho Chi Minh City Dich Vong Hau Ward, Cau Giay District, Ha Noi CityFounding date: 29 - 11 - 2006