[ad_1] Five models of respirators were made in record time, in about a month. The team of experts worked without a day off, between 10 and 15 hours a day. The idea came from an electrical engineer at the “Mihajlo Pupin” Institute, Ognjen Ristic. Ristic explained to RTS how the …
Read More »The first Serbian respirator made in record time: see what it looks like
