... 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. ... accessory and inner hole of mold.7. Other metal products.IGBT (SIEMENS) technology, high conversion efficiency Energy saving ...