2月 13 2020 08:17 Filter testing of materials for masks and respirators helps in determining their efficacy in preventing coronavirus transmission Proper use of personal protective equipment, like masks and respirators, is a critical part of the global healthcare response to the virus that causes COVID-19. 分类 医疗保健博客 时间 2月 13 2020 08:17 | 评论数 0 评论