Weifang Shanshui Trading Co., Ltd. specializes in manufacturing and developing mud pump fluid end expendables for customers worldwide. HA�� products have equivalent quality with those of OEM and are produced for direct replacement for brand mud pumps including but not limited to EMSCO, Gardner-Denver, National, Oilwell, IDECO, Skytop Brewster, OPI, Wirth and Wilson. With a large range of specifications, HB�� high quality products have been successfully proven themselves under various drilling conditions such as extreme pressure, high temperature and corrosive environments, and have been accepted domestically and internationally.