... , PP, EVA, and so on packing:25kgs /bag 1. Brief introduction of boron series flame-retardant material Zinc Borate is one ... of the earliest used fire retardants, it also is an important ... , PBT, nylon, unsaturated polyester, epoxy resin, polyimide and all kinds of fire retardant coatings.2. Performance index indexspecificationB2O3 4548ZnO37.540.0Loss ...