... product from purchased materials, processing, assembly, have strict quality control and passed the certification of BUREAU VERITAS Assessement ... stainless steel, steel, iron, alloy, zinc etc.FinishPolishing; Anodize; SandingPowder coating; Vacuum Plating; Nickel, Zinc, Tin, Silver plating etc.Tolerance0. ... other countries and regions.InspectionIQC, IPQC,FQC,QA good quality silicone rubber parts