... by the warehouse workers3.third checked after machining and surface finish.We check piece by piece each time.PackageInner packing ... /3/5) steel,etc2 Process: trim,grind,drill,CNC etc3 surface treatment : shot blasting , sandblasting or paiting , anodize , electroplating ... report;4)Process:die casting + secondary machining;5)Surface finish: Zinc/nickel rome plating, hot galvanized, cementite,painting, ...