Haiha Joint Stock Company
Thôn Liên Sơn, Xã Lão Hộ, Yen Dung District
Yen Thinh Tuynel Brick Production Joint Stock Company
Thôn Đa Thịnh, Xã Yên Lư, Yen Dung District
Phuc Thinh Trading and Manufacturing Material Joint Stock Company
Thôn Cựu Dưới, Xã Đồng Phúc, Yen Dung District