“Canadian companies are answering the call ... that various government departments committed in 2022 to purchasing PPE masks and respirators for internal use from domestic manufacturers such ...
As researchers worldwide clash on the effectiveness of masks, a Canadian inventor of a $379 COVID-19 helmet, Yezin Al-Qaysi, thinks he might have the solution. A Danish study published November 18 ...
However, a stockpile is no use if the PPE offers little to no protection for the user. A face mask cannot protect the wearer if it leaks due to a poor fit, as without a proper seal, unfiltered air ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果