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Switzerland. Canton Ticino. Locarno. Restaurant Vallemaggia. Lunch time. The waitresses wear mask on their faces to protect themselves and customers from the Coronavirus (also called Covid-19). Two plexiglass stand between tables as a health protective measure against coronavirus transmission and social distancing. The journalist Harald Maass checks the mails on his smartphone. Poly(methyl methacrylate) (PMMA), also known as acrylic, or acrylic glass, as well as by the trade names Crylux, Plexiglas acrylic, Acrylite, Astariglas, Lucite, Perclax, and Perspex, among several others, is a transparent thermoplastic often used in sheet form as a lightweight or shatter-resistant alternative to glass.29.09.2020 © 2020 Didier Ruef