This product has been tested by EU ROHS/PSHS standard. It can be used to filter materials such as melt-blown PP non-woven fabric, polyester fiber non-woven fabric, flame retardant polyester non-woven fabric etc. It has the characteristics of good degree, strong water resistance, high filtration efficiency and long service life. Folding design provides a larger filter area, longer filter life, less filter core updates, lower filter costs, This is an economical filtering product.