"20 Pleated filter element 
"10 Folded Filter element 
5-inch folding filter element 
40-inch PP cotton filter element 
30-inch PP cotton filter element 
20-inch PP cotton filter element 
10-inch PP cotton filter element 
5-inch pp cotton filter element 
Hangzhou Zhengguang Resin 001*7 
Hangzhou Zhengguang Resin 201×7 