The laser carving function with white words?

The laser engraving machine, widely used in different materials with different color words above, in general it is black and white words. But should pay attention to is the laser engraving machine dozen white is generally want to be decided according to your material, want to be in what material on the product to determine whether the laser engraving machine can hit the white words. The principle of laser engraving machine is surface ablation, so nothing to do with with color. Due to some metal material contains a certain amount of carbon, can in an instant high temperature carbonization black, so the laser engraving machine to have the possibility of playing black. Some resin composite material, use the laser engraving machine can play yellow color but could not hit the colorful effect. The laser carving function with white words? Some materials can be use the laser engraving machine with white word. Such as the following samples.