... AGMA and non-standardSurface TreatmentCarburizing, hardening and tempering, Nitriding, high frequency treatment, black of oxidation, zincing. ... machine, hobbing machine, grinding machine, gear shaving machine, CNC lathes, precision grinding machine, spline grinding machine, surface grinding machine, horizontal broaching machine ... than USD$20000; 30% deposit and 70% balance before shippment if the total ...