... 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. ... -up success rate; power factor > 95%Perfect and complete protection functions, increasing machine's reliability & stabilityNo special ...