What are the surface treatment processes for making badges with metal materials and imitation enamel process?

What are the surface treatment processes for making badges with metal materials and imitation enamel process?
The surface treatment process of metal material with imitation enamel process to make badges is mainly as follows:
Plating: Gold, silver, nickel, chromium, bronze and other metal colors can be plated on the surface of the badge. For example, gold plating can show a noble and gorgeous golden luster, enhance the grade of the badge; Silver plating makes the badge have a bright silver appearance, which is simple and generous; Nickel plating can increase the hardness and gloss of the badge surface, making it more wear-resistant and corrosion-resistant, and has a modern silver-gray luster.

Polishing: By mechanical polishing or manual polishing, the badge surface is polished smooth and flat, removing burrs, scratches and irregularities on the surface, so that the luster and color of imitation enamel are better displayed, and the metal part is also presented with a bright texture, increasing the overall beauty of the badge.
Drawing: The drawing process can form a delicate filamentous texture on the metal surface, increasing the texture and layer of the badge surface, and contrasting with the smooth imitation enamel part, making the badge more unique and artistic. Different drawing effects such as straight wire and messy wire are common, which can be selected according to design requirements.
Matte: Through chemical or physical methods to form a matte texture on the metal surface of the badge, this treatment can make the badge look more low-key and calm, but also increase the surface friction, reduce the residue of fingerprints and other stains, and the gloss of the imitation enamel against each other to create a unique visual effect.
Drop glue: Drop a layer of transparent crystal glue on the surface of the badge, and form a protective film after curing, which can not only increase the gloss and three-dimensional sense of the badge surface, make the badge look more crystal clear, but also play a role in protecting the imitation enamel and metal surface, preventing scratching and oxidation.
Screen printing: Various patterns, words or logos can be printed on the surface of the badge, which can achieve rich colors and delicate pattern performance, which is used to supplement or emphasize the design elements of the badge, and the combination of imitation enamel process to create a more personalized and creative effect.