... ,QDN,8407,2344V,TQ1SKD61,45#steel,etc.Heat treatmentHarden,NitridingDrawing software usedCAD,UG,PRO-E,SOLIDWORKSTolerance+/-0.01--0.02mmFeatures of ... /household productsQuality certificationISO9001:2000,TS16949AdvantageQualityInspecting during every process and full-inspection before packingPriceMaybe not the lowest, but must be the reasonable ...