Divided into screen printing, flat-panel printing. It is also generally called a drip badge, because the final operation of the badge is to add a layer of transparent protective resin (Polly) to the surface of the badge, using materials mainly of stainless steel and bronze 2 kinds of materials.
The right image is the bronze back effect, printing badge copper or stainless steel surface is not electroplating treatment, the use of color or wire drawing treatment.
Screen printing badges are mainly for simple graphics, less color. Flat panel printing: For complex patterns, more colors, especially with gradients.