#shieldUnmoderated tagAll postsTrending CommunitiesNewcomers' CommunitySteemit FeedbackSteemitCryptoAcademyআমার বাংলা ব্লগKorea • 한국 • KR • KOAVLE 일상STEEM CN/中文WORLD OF XPILARSteem POD TeamTron Fan ClubUkraine on SteemBeauty of CreativityExplore Communities...#shieldTrendingHotNewPayoutsMutedlupafilotaxia (75)in #polymethylmethacrylate • 6 days agoPolymethylmethacrylate as a protective shield against pathogensAs you should remember that among the main recommendations issued by the World Health Organization to prevent people…