Cladding parts product repair process is revealed. First, the products that have been air-milled will be water-milled. The water mill will be sanded with 320# sandpaper first, and 500# will be used for sanding. The polished product starts to be sprayed with varnish, the varnished product is carefully checked, and the defective product is repaired and then polished again The polished product is sprayed with varnish again, and the product is polished after it is flawless