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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. In the past 20 years, Dongying Mingde Petroleum Technology Co., Ltd has taken “Integrity, strictness, cooperation and win-win” as our mission, and pay close attention to production management and new product research. In 2004, Dongying Mingde Petroleum Technology Co., Ltd received the ISO 9000 quality system certificate and it has awarded more than 20 invention patents and 10 more utility model patents, and become the first class vendor of CNPC and SINOPEC. In 2008, Drilling Mud Additive Factory was reformed to Dongying Mingde Petroleum Technology Co., Ltd. of China University of Petroleum by the stipulation of Ministry of Education of PRC. Dongying Mingde Petroleum Technology Co., Ltd is comprised of Petroleum Additive Factory, Mud Technical Service Center, Plasma Slotted Liner & Screen Factory, Petroleum Equipment Company, Well Completion and Sand Control Technology Center. There are more than 5 branches in Beijing, Xinjiang, Jilin, Kazakhstan etc. Dongying Mingde Petroleum Technology Co., Ltd technical service mainly engaged in drilling mud/drilling fluid materials research and development, site drilling mud design and service, technical solution for high difficulty well, research and production of drilling mud additives/drilling fluid materials, oil production additives and refining additives, R&D of downhole tools and sand control tools.