The black masterbatch has good compatibility with plastic products, so the black masterbatch can stay in the product for a long time and exert its proper performance. However, if the black masterbatch exceeds its compatibility range, it will have a negative impact on the plastic product. For example, when a large amount of filler is used, the viscosity of the system will increase, the molding process will be difficult, and the mechanical properties will decrease. When the amount of the flame retardant is large, the mechanical properties of the material will be significantly reduced; the addition of the liquid auxiliary agent will cause the heat resistance of the material to decrease; Most of the additives cause a significant decrease in the transparency of the transparent plastic or a complete loss of transparency.