... dehydration of sewage treament factories, paper mills and chemical industry WJW2750705 typeDiameter(mm)Density yarn(cm) air permeabilityMesh(inch)usageWarp Weft ... -8.5163269WJW40355050.350.5012.0+0.512.0+0.51621105 WJW2750705 (polyester sludge dehydrating screens)