Hoang Gia Company Limited
Số 52 Gián Khẩu, Xã Gia Trấn, Gia Vien District
Nguyen Vong Company Limited
Xóm 5, Xã Mai Sơn, Yen Mo District
Ninh Binh Traffic Management and Construction Number 2 Joint Stock Company
Km 3, Đường Nguyễn Huệ, Phường Ninh Phong, Ninh Binh City