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This Biomass Graphene Particulate Respirator Series Product, manufactured by Weichuangli New Materials Co., Ltd. Biomass graphene derives from natural green plant straws. The Healfiber material added with biomass graphine has far-infrared, bacteriostatic, and other comprehensive features. Due to the unique material, this biomass graphene respirator series products can effectively fliter dust, bacteria and other harmful substances. This respirator is ideally suited for applications where a higher protection factor is required and provides respiratory protection against most gases, vapors and particulates.