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GUELPH, ON / ACCESSWIRE / September 27, 2021 / ZEN Graphene Solutions Ltd. (“ZEN” or the “Company”) (TSXV:ZEN)(OTC PINK:ZENYF), a Canadian, nanotechnology company focused on next-gen healthcare solutions, announces test results demonstrating significantly enhanced bacterial filtration efficiency (BFE) and viral filtration efficiency (VFE) of ZENGuard™-enhanced surgical masks.
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