... machinery process parts all kinds of gears, chain gears Axles hardening.2. ll kinds of automobile, motorcycle parts. such as crank axles ... mall shaft, sifting fork, etc.hardening.3. All kinds of power tool. Such as gear,alex center4. Machine tool bed surface,machine ... , motorbike, mold, agricultural machinery.2. hardening machinery parts, such as: all kinds of gear wheel, chain wheel, kinds of axis, pin ...