Cangzhou Kunyuan Imp.& Exp. Trade Co., Ltd. is an integrated company specializing in businesses related to the oil and natural gas industries. With business extended to overseas markets, it has established trade centers in HongKong & Cangzhou, to undertake the production and manufacturing of its oil investments, oil-related products, domestic and overseas trade and cooperation businesses. As a franchised dealer of Hengyang Valin Steel Tube Co., Ltd., it keeps a large variety of oilfield ...