... 4. High Quality & Reliability 5. Self Adapting Frequency tools hardening induction quenching machine Heat Treatment like annealing, normalizing, quenching ... , tempering.1. Hardware and tools, such as plier, wrench, hammer, ax, screwing tools and shear (orchard shear).2. Automobile ... as gear and axes.4. Machine tools, such as lathe deck and guide rail.5. Various hardware metal parts and ...