To perfect the quality of our products, we imported a vortex durometer from Germany to carry out 100% hardness test of our products. While we apply a large scale vortex flaw detector to detect the crack flaw in stud bolts, we use an imported direct-read spectrograph to verify chemical composition of raw materials. We have received ISO9001: 2000 and been granted CE Certificate by the Lloyd's Register for our products EN 14399 3-6 and EN 15048-1.

YPH manufacture hex bolt ,hex nut sincere 2001,We have rich expericence in the fastener industry,YPH have a strict quality contral department,We pay high attention to evey oder from customers,in the past years,We got cooperation with many customers from abroad,such as Europe, Middle East, North America,They are all kind people we have met ,We welcome them to visit our factory, Lead them to enjoy Chinese culture and Chinese food,They are not only my customers, but also our good friends.We believe that good relatonship and mutual trust are the first step,Then cooperation, If you want to know more about YPH,Please contact us,YPH will give you the best service and the fluently feedback!