Advanced computer color matching system is adopted for dyeing Ras material to ensure small color difference of color batch, bright color, stable color and good dispersion of color powder. Dyeing and granulation is completed at one time, which simplifies the production process of plastic products for customers, facilitates processing, improves the yield of products, saves costs for customers, and is deeply trusted by customers. The dyed RAS material can be modified according to the requirements of customers, making pearlescent, plush, metallic color, light diffusion, antibacterial, extinction, anti aging, special optical properties, antistatic, anti-aging and other functions. Dyed RAS materials can be widely used in: Electrical socket, housing, etc. Daily necessities kitchen appliances, lighters, refrigerators, TV bases, cassette boxes, etc. Automobile industry headlight box, reflector, instrument panel, etc. Household products tableware, food cutlery, etc. cosmetics packaging, etc.