Xi&＃039;an Overseas Oilfield Supplies Co., Ltd (XOOS) is a diversified supplier for oil & gas industry , our supplying range includes petroleum drilling tools , rig parts&accessories , OCTG products, wellhead equipments , handing tools , cementing equipments , solid control equipments , as well as an extensive range of industry specialized equipments and large-scale fine forgings of special steel for oil , electricity , shipbuilding, meta-llurgy , machinery field . Most of the products are Chinese origin .