RUIERXIN from 2020 - PRC
 
4 layers:
First - SS spunbond 60 g/m2
The second is antibacterial material 99-meltblown 25 g/m2
Third - antibacterial material 99-meltblown 25 mg/m2
4th - SS spunbond 60 g/m2
 
Each mask can have its own individual package with a slider lock or each 10 pcs. one basic package with a slider lock of your choice.