During the compounding process, adding fillers can greatly reduce costs. For some composite manufacturer, it's a new challenge to increase filler content. If the screw and machine are damaged and corroded by the filled product, it May directly affect the product quality and production efficiency. In this regard, dispersing fillers is not a better choice if only attempts are made to increase the grade of filler in a single screw extruder. The twin-screw extruder provided by Nanjing Haisi can make the proportion of calcium carbonate reach 85%. Therefore, adding a large amount of filler to the product can save a lot of resin every year and completely recover the production cost of the extruder equipment.