Filler masterbatch refers to the process of mixing and mixing various additives, fillers, and a small amount of carrier resin required for the convenience of operation during plastic processing and molding. The resulting particles and powders are called masterbatch. Filler masterbatch is composed of carrier resin, fillers, and various additives. The limit of additives or the content of fillers in the masterbatch is several to ten times higher than the actual amount required in plastic products. During the molding process, it is necessary to adjust the ratio of the masterbatch to the matrix resin based on the content of relevant components in the masterbatch and the amount that needs to be added in the actual product. Masterbatch can usually be divided into ordinary filling masterbatch (referred to as filling masterbatch) and functional masterbatch, such as color masterbatch, anti fog masterbatch, etc. The main component of filling masterbatch is filler, which is mainly used for the processing and molding of polyolefins (polyethylene and polypropylene), also known as polyolefin filling masterbatch.