Dau Tu Va Phat Trien Keystone Joint Stock Company Address: 24/5/4, D3 Street, Ward 25, Binh Thanh District, Ho Chi Minh City Enterprise code: 0315093008 Phone: 0903997909 Representative: Nguyen Van Thuc Ward 25, Binh Thanh District, Ho Chi Minh CityFounding date: 6 - 6 - 2018