Filler masterbatch containing a large concentration of fillers and additives, the use of a certain amount of matrix resin must be added after mixing and processing, the filler mainly play a filling role. Fillers and auxiliaries can give special functions to plastic products, such as: light, electricity, flame retardant, degradation, etc., and are called functional filled masterbatches. Functional masterbatch usually includes masterbatch, light conversion masterbatch, high-efficiency insulation film masterbatch, anti-droplet masterbatch, and degradable masterbatch. Masterbatch is a special kind of granular material that colors plastic products. It can be divided into polyolefins, ABSs, PSs, and ASs based on the plastic coloring. Color masterbatch production process is usually divided into two steps: the first step is to prepare the pigment pre-dispersion, that is, the pigment surface treatment with a dispersant or other additives; the second step is to mix the pigment pre-dispersion with the carrier resin. The masterbatch was prepared after the pellet was melted. The color masterbatch is composed of a pigment, a dispersant, a carrier resin and an appropriate amount of an auxiliary agent. The main role of the dispersant is to fully disperse the pigment, evenly dispersed in the carrier resin and the matrix resin, and finally obtain a uniform color plastic product. The carrier resin used for color masterbatch should first have good compatibility with the pigmented resin, and secondly the fluidity of the carrier resin should be greater than the pigmented resin so that the pigment can be better dispersed. The composition of color masterbatch, the choice and amount of pigment depends on the nature of the plastic to be pigmented, and the content of pigment in the masterbatches commonly used for polyolefin plastics is 20% to 40% (mass fraction).