As a recognized and welcomed threaded fittings and valves’ manufacturer, advanced  equipment and automation system and strictly detection is our factory's best wealth, also is the precondition to win a lot of clients.Since from 2016, Yingli Machinery casting factory mass scale update equipment, greatly improving the annual output, rigorous tests process greatly to ensure product quality.
In addition, we support the third party inspection before shipment, hope through our products  to help you earn more profits!