Ua hoʻokuʻu ʻia ka mea kaua hou no ka anti-epidemic, mask filtration efficiency tester!
ZR-1006 Model A(Salt)/Model B(Oil) mask particulate filtration efficiency and airflow resistance tester e pili ana i ka nānā pono a me ka nānā ʻana i nā kikowaena no nā huahana olakino, nā kikowaena no...