This series of products is a high-concentration phosphorus and nitrogen halogen-free flame retardant masterbatch of PP carrier, which can pass: UL-94 0.8mm V-0 and UL746C (70℃ hot water 168hr immersion test); and pass GWIT 750℃ and GWFI 960°C glow wire test. This product has high environmental protection performance and can meet the requirements of the EU ROHS directive. The obtained flame retardant products have the characteristics of low density and low smoke emission.