Van Phong Dai Dien - Cong Ty CP Cong Nghe Cao Sigma Viet Nam Address: Phong A3-2107, Ecolife Capitol Building, No 58 To Huu, Dai Mo Ward, Ha Noi Town, Viet Nam, Ha Noi City Enterprise code: 0111437356-001 Phone: 0913880666 Representative: Le Thi Hung Dai Mo Ward, Nam Tu Liem District, Ha Noi CityFounding date: 29 - 5 - 2026