... (piston, piston rings, alloy wheels, etc.), as well as pens, glasses, etc., to the surface both beautiful and wear functional ... 1.Cleanness,pollution-free deposition,green product,healthy non-toxic2.Metal,ceramics,glass deposited with protective coating,hard coating,decorative ... coating3.High ionization rate and high depositing speed of metal vapor,strong adhesion between coating and substrate.4.High ...