Ban Quan Ly Cong Trinh Cong Cong Huyen Hoanh Bo Address: Khu 10, Troi Town, Hoanh Bo District, Quang Ninh Province Enterprise code: 5700950207 Phone: 0203858161 Troi Town, Hoanh Bo District, Quang Ninh ProvinceFounding date: 4 - 10 - 2008