Peter Tsai, the inventor of the N95 mask, breaks his retirement to fight covid-19The news recently broke that the retired Taiwanese engineer and [...]By Biosaludglobal.com|2020-07-23T18:01:05+00:00July 23rd, 2020|Sanitary products|Comments Off on Peter Tsai, the inventor of the N95 mask, breaks his retirement to fight covid-19 Read More