vacuum coating technology is a novel material synthesis and processing technology, 

which is an important part of surface engineering technology. 

It originated in the 1930s and did not form industrial mass production until the 1980s. 

It is widely used in electronics, decoration, communication, lighting and other industrial fields.

 In a vacuum environment, metals or metal oxides become gaseous atoms or molecules and deposit on metal or nonmetallic surfaces.

Known as one of the most promising important technologies, and in the development of high-tech industrialization to show an 

attractive market prospects.

Role of vacuum

 1. reduce collisions between evaporating and residual gas molecules

 2. inhibit the reaction between them

Advantages

Low energy consumption, non-toxic, no waste liquid, small pollution, low cost, good decorative effect, strong sense of metal.