Graphene far-infrared heating belt to relieve back pain

  Description:  1.Innovative Graphene Heating Material: Graphene can absorb and  radiate up to 40% far infrared ray. Human body is a good absorber of far infrared ray, and the main absorption band is 3-15μm where the graphene far infrared ray works. When heated, the graphene will radiate 6-14μm far infrared wa

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