... treatmentautomoble, motorcycle accessories high-frequency hardening heat treatment. For example: crank shaft, ram, piston pin, camshaft, ... high-frequency hardening heat treatment, for example: vice, locking pliers, spanner.hydranlic components: for example:the plunger, rotor, ... parts, fasteners through thermal forming.hardware tools diathermy,for example : pliers and spanners heating-diathermy-forming ...