Best-Selling Cheapest Activated Carbon black 0.45 micron filter cloth Feature Product Details 1.Style Roll 2.Feature Dust collection, Large dust collection,High quality,High efficiency 3.Material Activated carbon 4.Size OEM ,Customizing is welcome 5.Color Black 6.Frame Non 7.Is used to Electronic,Biological pharmaceutical,Mechanical instrument, Petrochemical,light industry 8.Efficiency 45% 9