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  • For raw materials
  • Material control from raw materials. For raw material checking, we check 100% by chemical liquid. Any property mistakes would be rejected.
  • Sand hole inspection after raw materials are machining before polishing.
  • Carbon component report can be provided if needed
  • Mechanics test report can be provided if needed
    For New products
  • 2nos of new samples to be checked against technical drawing. Testing report is provided to customers before bulk production.
    For finished products
  • For valves, pressure testing and temperature testing is required for each valve.
  • After we get the finished products, we check for surface roughness, thickness equality, roundness, size measurement and sand holes again.
  • For all finished products, the checking quantity is not less than 10% of total quantity.
  • Before shipment, we check for the quantity of each product in order to find out any missing quantity or wrong product.
  • Finally, we use strong package to prevent the products from any damages.


Hot line
0086 -15869600665
Deigns to inquire the mail
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