Poly Stone Chemical is an environmentally-friendly R&D manufacturer of halogen-free flame retardants and flame retardant materials, with many core technologies, including chemical synthesis and composite application technology of halogen-free flame retardants, preparation technology of flame retardant modified plastics, and functional polymer materials technology. The company's halogen-free flame retardant meets the international standards of RoHS, REACH and WEEE, and has excellent flame retardant and environmental protection performance. It is mainly used in the field of new materials such as flame retardant plastics and flame retardant coatings, and its core product EPFR——APP series (high polymerization degree ammonium polyphosphate) is comprehensive.
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