Ngoi Nam Ninh Brick Joint Stock Company
Thôn Bái Hạ, Xã Nghĩa An, Nam Truc District
Phi Minh Duc Joint Stock Company
Bái Thượng, Xã Nghĩa An, Nam Truc District
Nam An Brick Joint Stock Company
Xóm 20, Xã Nghĩa An, Nam Truc District
Trung Hoa Building Materials Production Company Limited
Xóm 16, Xã Nghĩa An, Nam Truc District
Hung An Production & Business Company Limited
Đội 12, Thôn Cầu Thiệu, Xã Nam Hải, Nam Truc District
Tuong Giang Company Limited
Khu Bãi, Thôn Dương Độ, Xã Đồng Sơn, Nam Truc District