In plastic spraying, to improve the physical, mechanical, chemical and optical properties of plastic spray coating and change the color of the material, called the modified material. Often modified materials generally known as the filler. A wide range of modified materials, a modified material can often play several roles, the purpose can be used to highlight one of the role. Such as graphite, tungsten disulfide, aluminum, copper, glass, quartz powder, pigments, mica and other modified materials.