Phat Trien Cong Nghe Tam Son LTD Address: Do Lane, Hamlet 2, Quynh Do Hamlet, Vinh Quynh Commune, Thanh Tri District, Ha Noi City Enterprise code: 0104594904 Phone: 02436490375 Representative: Nguyen Thi Xuyen Adress: 163 Dinh Cong, Dai Yen Commune, Ha Long City, Quang Ninh Province Vinh Quynh Commune, Thanh Tri District, Ha Noi CityFounding date: 13 - 4 - 2010