Cau Duong Bac Giang Joint Stock Company
Thôn Nứa, Xã Đoan Bái, Hiep Hoa District
Van Cam Brick Joint Stock Company
Xóm Trại Cây, thôn Vân Cẩm, Xã Đông Lỗ, Hiep Hoa District
Hoang Son Phat Development Company Limited
Thôn Vân Cẩm, Xã Đông Lỗ, Hiep Hoa District