Physical vapor deposition (PVD) is a variety of vacuum deposition and is a general term used to describe any of a variety of methods to deposit by the condensation of a vaporized form of the material onto various surfaces.

The metal products with PVD treatment are wearproof and anticorrosion. Also they look very nice and widely used in many industry, such as watches, leather belts, glasses, cigarette-lighter, tools, etc.