Ong Soi Thuy Tinh Vinaconex Joint Stock Company Address: Lot 5, Bac Phu Cat Industrial Zone, Phu Cat Commune, Quoc Oai District, Ha Noi City Enterprise code: 0500570791 Phone: 0243677145 Phu Cat Commune, Quoc Oai District, Ha Noi CityFounding date: 18 - 10 - 2007