Cong Nghe Toan Thang Joint Stock Company Address: Do Nha Hamlet, Tan Tien Commune, An Duong District, Hai Phong City Enterprise code: 0200453631 Phone: 02253225363 Representative: Nguyen Duc Tuyen Adress: Do Nha Hamlet, Tan Tien Commune, An Duong District, Hai Phong City Tan Tien Commune, An Duong District, Hai Phong CityFounding date: 26 - 3 - 2002