Talc not only plays a role in reducing costs in plastic modification, but also has an obvious enhancement effect, but not all talc will have an enhancement effect. With the difference of product grade, the difference is very obvious. And the types of plastics are different, the performance is not the same, the processing equipment is different, it is difficult to give a unified specific standard for the talc used in the plastic industry. The overall principle of selecting talc powder in the plastics industry is: try to use talc powder products with matching particle size, talc raw materials and particle size distribution must be stable, and the distribution range should be narrow to ensure the stability of the quality of plastic products.