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 ... filter bag.(#1,#2,#3, ) 6).High efficiency filter bag.(#1,#2,#3, ) 7).Activated carbon filter bag.(#1,#2,#3, ) 8).Pleated Media filter ... bags.(#1,#2,#3, ) Model: A-B-C-D-E-F-G-H A: PP(Polypropylene) PE(Polyester) NMO ...