... Reliability 5. Self Adapting Frequency induction auto parts hardening machine Heat Treatment like annealing, normalizing, quenching, tempering.1. ... and motorcycle fittings, such as crankshaft, connecting rod, piston pin, chain wheel, aluminum wheel, valve, rock arm shaft, ... and diagnostics system—"JKZ-PS" device, guarantee the machine of high stability, reliability and security. Strict Supplier ...