Giai Tri Va Dich Vu Gfour Tech Joint Stock Company Address: Hamlet 10, Thach Than 4 Hamlet, Xa, Quoc Oai District, Ha Noi City Enterprise code: 0111561748 Phone: 0979210861 Representative: Vu Manh Ninh Quoc Oai Commune, Quoc Oai District, Ha Noi CityFounding date: 7 - 7 - 2026