... filter bags (#1,#2,#3, 4 ) 2).Absolute micron filter bags.(#1,#2,#3, 4 ) 3).Long time filter bags.(#1,#2,#3, 4 ) 4).High flux filter bag.(#1,#2,#3, 4 ) 5).Oil absorbed filter bag.(#1,#2,#3, 4 ) 6 ... μmE: SG (All Sewing)WG (All Welding)F: A( Absolute)N (Normal)G: U (End construction U style)V (End construction ...