Plastic is a mixture of resin, plasticizer, filler and coloring agent, it has light weight, corrosion resistance, friction resistance, high mechanical properties, good electrical insulation, easy processing, beautiful and other characteristics, can be used as structural materials, insulation materials and corrosion resistant materials, in the national economic departments, military industry and cutting-edge science and technology has been widely used

In order to make plastics have beautiful colors, a certain amount of color is often added to plastics. The requirement for the color is that it is easy to color and disperse during processing, and does not react chemically with other components in the plastic. Due to the high whiteness of tio2, large achromatic power, with good opacity and chemical stability, with titanium dioxide instead of Lide powder, the amount of white pigment can be reduced by 2 to 3 times to produce white or color plastic necessary coloring filler, is the best white pigment. When used in combination with other pigments, it can form beautiful bright colors, because toys and food utensils are non-toxic.