Ikhwalithi eqinisekisiwe | I-Qingdao Junray ZR-1006 ingumhloli we-mask particulate filtration ukuthi yonke imingcele ifanelekile.
NgoJulayi 2020, umkhiqizo wenkanyezi, I-ZR-1006 Mask Particulate Filtration Efficiency and Air flow Resistance Tester Tester Isingeniso Ukusebenza kahle kokuhlunga kwezinhlayiyana imaski ye-ZR-1006 kanye ne-airflow resis...