is flame - retardant polypropylene masterbatch, an environmentally - friendly polypropylene masterbatch with phosphorus, nitrogen, and Bromin as the main flame - retarding elements. On one hand, it relies on the synergistic effect of condensed - phase and gas - phase flame - retardant mechanisms to improve flame - retardant efficiency. On the other hand, it inhibits the dripping of the melt through a catalytic mechanism to achieve a flame - retarding effect. When 8207B is mixed with PP in a proportion of 5% - 10%, the flame - retardant grade can reach UL94 - V2 (1.5mm and 3.0mm). 8207B meets the requirements of regulations such as RoHS and SVHC for products. Products using 8207B also have the characteristics of low density, low smoke generation, and low mold corrosion.