Puyang Kerui Mechanical engineering technology Co., Ltd. was established in 2001 and passed IS09001 certification in 2007. It is a professional enterprise which specialized in design, OEM, production, the wellknown manufacturer in petroleum machinery field and the strategic partner of Zhongyuan Oilfield. Kerui have a number of patented products. Kerui main products:sucker rod packer, bridge plug, gasoil separator, anticorrosion device, paraffin scraper, sand filter tube, sieve tube, scale setting device, sand setting device, layered oil extraction pump and so on.