... tools, screwdrivers, picks, knives, scissors, gardening tools and other tools of the quenching, shaft, pin, gears, sprockets ... camshaft, etc.), bicycle parts, machine tools, guides, farm machinery parts, textile machinery parts (Th cloth, roller), pump parts, drilling tools ... debugging5) Perfect protection function, high reliability6) Compared with other heating methods (such as gas, oxygen, acetylene, ...