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Material Inspection: Check the quality and specifications, gurrantee the material meet the Requirments.First article Inspection: Full check the First article, G...

Burrs: Burrs on the edge of the Punching partsBending: Punching pressure overloaded lead to products Bending.Fault and Fissures: Non-uniform Load lead to the pr...

Die wear: Long run life-time service on moulds, effect products' quality and precise.Moulds Slanting: Moulds Skew, effect products final Dimensions.Moulds D...

Unqualified Material: Bad Material, Oil not Even or Chemical not Qualitified.Environmental: Stock in a humid Environment.No Oil: Bfore Punching, no Oil added on...

Plating: Put the products in the Chemical solution, Galvanic current, make the Plating adsorption on the surface.Anodization: Punching parts as Anode, Electroly...