Why is the perforated mesh spray-painted?

Why is the perforated mesh spray-painted? In fact, many perforated meshes are produced for decoration. For example, the bezel on the chassis is a black or other color perforated mesh. The spray-painted mesh is to make it more beautiful.

Paints: usually viscous paints containing dry oil and pigment or resin. When applied on the surface of the object, it can be dried in white or dried to form a tough protective and decorative film. It has anti-corrosion, anti-rust, and beautiful functions. There are blending paint, magnetic oil, anti-rust oil and so on.

Spray paint: a class of artificial paint. It is named after the commonly used spray gun to spray on the surface of objects. Distinguish spray paint and colored spray paint. The former is composed of nitrocellulose (or cellulose acetate, ethyl cellulose, etc.), resin, toughener and solvent, and the latter is added with soluble dye or pigment. In addition, there are varieties containing no fiber-based derivatives and containing only resin and the like. Easy to use. Can be sprayed or painted, fast drying, water and oil resistant.

The significance is that it not only prolongs the service life of the punching net, but also makes the product beautiful.