Phú Ánh Dương Company Limited
Khu 2, Xã Ninh Dân, Thanh Ba District
Đường 132, khu 8, Thị trấn Thanh Ba, Thanh Ba District
Thanh Bình Company Limited
Khu 2, Xã Ninh Dân, Thanh Ba District
Bao Hung Gas Company Limited
Khu 9, Xã Lương Lỗ, Thanh Ba District
Duc Trung Petroleum Services and Trading Company Limited
Khu 15, Xã Yển Khê, Thanh Ba District
Hung Anh Pj Company Limited
Khu 5, Thị Trấn Thanh Ba, Thanh Ba District