Established in1992, Dongying Mingde Petroleum Technology Co., Ltd is a professional manufacturer and supplier of slotted liner, tubo ranurado, plasma slotted liner, API slotted liner, laser slotted liner, laser cut liner, sand control liner, mechanical slotted liner, slotted screen pipe, API slotted screen pipe, slotted casing, slotted tubing, composite screen, perforated liner, perforation liner, perforated tubing and casing, API perforated tubing, API perforated casing, punched liner, precise metal mesh screen, sand control screen pipe, well completion service, sand control service, gravel packing, acid flushing, API 5CT oil tubing, oil casing pipe, petroleum pump, tubing pump, conventional pump, sucker rod pump, pup joint, tubing coupling, casing coupling, sucker rod pump and spare part, drilling fluid additives, oil production additives, drilling fluid chemicals, drilling fluid materials, drilling mud additives, drilling mud chemicals, water-base mud, oil-base mud, WBM, OBM, drilling fluid service, fluid loss reducer, drilling fluid defoamer, shale stabilizer, heavy oil viscosity reducer, drilling fluid emulsifier, drilling fluid lubricant, crude oil demulsifier. Dongying Mingde Petroleum Technology Co., Ltd(former China University of Petroleum Drilling Mud Additives Factory) is also a professional oilfield service company for petroleum additives, petroleum equipment and technical service, supported by College of Petroleum Engineering, College of Chemistry and Chemical Engineering and College of Machinery and Electronic Engineering of China University of Petroleum.