... Nickel plated,Dacroment Plated,chromium plated,Tin plated,Blackphosphating ,anodized ,and Environmental Plated is used in our products,it is no ... the quality control .3.Certificate:Provide dimensions report,chemical report and other testing report .Good service We can manufacture nonstandard parts ... .6)Shipment:By truck,by air,by sea..Thanks for clicking our products!Welcome to call me any time !Tel:+86 ...