Polyester Filter Bag 1.Material:Needle felt Polyester 2.Welding or Sewing 3.Plastic Ring or Steel Ring ... 4.Size,#1,#2,#3,# Polyester Liquid Filter Bag was made by PP,PE,Nylon,Nomex ... ,#2,#3, ) 3).Long time filter bags.(#1,#2,#3, ) 4).High flux filter bag.(#1,#2,#3, ) 5 ... Media filter bags.(#1,#2,#3, ) Model: A-B-C-D-E-F-G-H A: PP(Polypropylene) PE(Polyester) NMO ...