... 0.01mm tolerance 4.QC inspect after products finished 5.spring clip Product name Industrial canopy stainless steel door hingesControllable ... processingturning, milling, drilling, grinding, wire-EDM cutting etcApplied softwarePRO/E, Auto CAD, Solid Works , UG, CAD/CAM/CAEMaterial Range:Metal: Stainless ... quality. Description High-quality, well-fame credit ,and good materials torsion spring clip