Quy Tin Dung Nhan Dan Sai Son-Huyen Quoc Oai Address: Khu Vuc Nha Truyen Thong CM, Sai Son Commune, Quoc Oai District, Ha Noi City Enterprise code: 0500317453 Phone: 02433679292 Representative: Nguyen Huu Ly Sai Son Commune, Quoc Oai District, Ha Noi CityFounding date: 25 - 1 - 1999