Vinh Tuong Industrial Company Limited Northern Viet Nam
Thôn Vĩnh Bảo, Xã Vĩnh Khúc, Van Giang District
Tam Khanh Material Company Limited
Thôn Nhân Lý, Xã Thanh Long, Yen My District
Northern Concrete Joint Stock Company
Thôn Tổ Hỏa, Xã Lý Thường Kiệt, Yen My District