Decorative PVD is involved in applying colors on small pieces, such as jewellery or watches. Golden, rose golden, black are the most common colors. The coating technology can be arc ion plating or magnetron sputtering. The power produced by arc ion plating is strong. The particles made by AIP is bigger comparing magnetron sputtering, because the power by sputtering is less. In order to obtain the best quality, we can combine these technolgies in the same machine. So the particles made by sputtering can fill the gap of big particle made by arc.