... NitridingHardnessHRC50~55Mould featuresAdvanced design, Logical structure, High precision, Qualified materials, Long lifetime, Short delivery ... ADC3, ADC6, ADC12, ZL104, ZL107.ProcessCasting, Deburring, Machining, Surface Treatment, Packing.Surface treatmentHigh quality polishing, Chrome ... , walking thread cuttings, precision machine sparks, large grinding machines, CNC engraving machines and 10PCS ...