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At last! Ear plugs appeared before the nano technology Nano Silver antimicrobial effect earplugs YESEARNS4000 noise, we hear the voice! Avoid ear problems (bulges)! By incorporating a Nano-Silver powder antibacterial rate 99%, roughly 650 types of bacteria to antibacterial-causing bacteria that cause ear problems caused by swimming concentrated Nano-Silver particles the directly enters antimicrobial preventive antibiotics, bacteria, during sudden pressure pressure adjustment prevents damage to the eardrum and — the interaction of low-frequency sounds