Our manufactory is located in Mianyang City,Sichuan Province.We adopt advanced production technique and stable quality control method to make high quality tappet, and we have earned good reputation. We have more than fifity sets domestic advanced column production facilities,like cold pressing forming machine, precision CNC machining center, high power laser welding machine,multipurpose furnace heat-treating facility, numerical control high precision internal grinder, precision centerless grinder, NC Surface Grinding Machine etc. Meanwhile, we use precision Cylindrical Detector, precision roughness tester, leak down beach, hardness tester, metallographic microscope, precision Inside and outside diameter detector to guarantee the quality.