▎ 摘　　要

NOVELTY - Massage ball material comprises polyformaldehyde, graphene powder, stone powder and magnetic powder. USE - The material is useful for ball massage therapy, electric therapy, stone therapy and magnet therapy for activating collaterals, relieving pain and swelling, promoting blood circulation, and removing blood stasis. ADVANTAGE - The material has enhanced corrosion resistance which prolongs the service life of the material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the massage ball material, which involves adding polyformaldehyde, graphene powder, stone powder and magnetic powder to a reactor, stirring at 220-250 degrees C for 3-8 hours, discharging, drying at room temperature, and molding to obtain the product.