Lam Thang Production Trading Company Limited
Km 7, đường 55, Xã Nam Cường, Nam Truc District
Nam Ninh Services – Trading - Mineral Company Limited
Tổ 8, Khu E, Thị trấn Lâm, y Yen District
Viet Duc Transport and Trade Development Company Limited
Xóm 5, Xã Xuân Trung, Xuan Truong District
Gas Ngoc Dung Business Company Limited
Thôn Văn Hưng, Xã Mỹ Phúc, My Loc District
Khu I, Thôn Phú An, Xã Xuân Ngọc, Xuan Truong District
Bao Cham Joint Stock Company
Tân Lâm, Thị Trấn Lâm, y Yen District