What are non-woven fabric masks made of?
The main raw material for non-woven masks is polypropylene (PP) fiber, which is widely used in different functional layers of the mask: spunbond polypropylene is often used to make the strong and …
The main raw material for non-woven masks is polypropylene (PP) fiber, which is widely used in different functional layers of the mask: spunbond polypropylene is often used to make the strong and …