Established in1992, Dongying Mingde Petroleum Technology Co., Ltd (former China University of Petroleum Drilling Mud Additives Factory) is a professional oilfield service company for plasma slotted liner,slotted liner/ tubo ranurado, sand control screen, sand control slotted liner, api slotted liner, precise screen pipe, composite screen pipe, drilling fluid materials,drilling fluid chemicals, drilling fluid additives,oil production additives, petroleum equipment and technical service, suppor...View More