It is energy-saving cycle operating Car Vacuum Furnace, mainly used for the aerospace, aviation aircraft manufacturing industries, precision parts Bright oxidation annealing without heat treatment, as well as automobile manufacturing industries, precision machinery manufacturing, precision mechanical or no oxidation not forging Bright decarbonization heating, quenching, annealing, tempering, etc. heat treatment and protection of the ball annealing atmosphere and copper use, Copperbelt, brass bright annealing without oxidation.