Vinh Kiem Company Limited
Thôn Đông Kết, Xã Đông Kết, Khoai Chau District
Quoc Chiem Construction Company Limited
Thôn Hồng Phong, Xã Tân Châu, Khoai Chau District
Hung Thanh Building Materials Manufacturing and Trading Joint Stock Company
Thôn Tân Hưng, Xã Chí Tân, Khoai Chau District
Vinh Thu Hung Yen Company Limited
Thôn Cẩm Khê, Xã Liên Khê, Khoai Chau District
Royal Viet Nam Investment Joint Stock Company
Thôn Thọ Bình, Xã Tân Dân, Khoai Chau District