1.Screen Printing: This is a printing technique that uses a mesh frame to transfer ink onto specific substrate areas.

2.Stickers: These are pieces of printed paper, plastic, vinyl, or other materials with a temporary or permanent pressure-sensitive adhesive on one side. They come in various shapes, sizes, colors, and designs.

3.Spray Painting: This technique involves using a device to spray materials such as ink, paint, or varnish onto a surface.

4.Electroplating: This is a process that creates a metal coating on a surface, often used to plate silver or gold colors onto plastic surfaces.

5.Vacuum Metallization: This is a physical vapor deposition process where argon gas is introduced into a vacuum, causing the target material to separate into molecules that are then adsorbed by the conductive product, forming an even, smooth metallic surface layer.

6.Polishing: Smoothing the surface through polishing can reduce the number of gas molecules adsorbed on the surface, thereby reducing the outgassing.

7.Hot Stamping: This is a popular decorative process that transfers pre-dried ink or foil onto the surface of plastic products at high temperatures.