e ZincGas NitridingBlue Zinc-PlatedHigh-frequencyHeat TreatmentBlack Zinc-PlatedBlack Oxide coatingHard anode oxidationClear anodizeBlack oxidationGreen PTEESand BlastingTemperingQuenchingAnnealingPolishing2.Process Equipment List CNC machine Fanuc brand 2sets 500*400*300 (mm) CNC machine Mitsubishi brand 8sets 850*500*500 (mm) Brother CNC machine 10sets 850*500*500(mm) CNC Gantry machine 1sets 1600*700*700(mm) EDM Sodick brand 2sets EDM Taiwan brand 2sets CNC automatic ?lathe machine 3set