Ban Quan Ly Dau Tu Xay Dung Cong Trinh Quan 4 Address: 21, 23 Doan Nhu Hai, Ward 12, District 4, Ho Chi Minh City Enterprise code: 0306370086 Phone: 02839402633 Representative: Bui Thanh Tan Ward 12, District 4, Ho Chi Minh CityFounding date: 20 - 12 - 2008