... 3.CMM to guarantee the quality 4.Sample order works here Item NO. cnc machined jig and fixtureMaterialsIron, aluminum, steel, ... ;- During production, technicians self-check and Engineer spot check to assure the good quality.- QC inspect after products finished- ... , Powder Coating, Blacken, Hardening, Painting and many other treatment of the parts.Quality Assurance :IPQC inspect each during every step ...