Detailed Product Description Product: pp valve bagMaterial: ppWidth: from 350mm to 700mmLength: as your requirementColor: as your requirementWeave: as your requirementYarn: from 600 to 1500Bottom: single fold or double foldPrinting: one side or two sidesThe valve bags are widely used in packing of chemical powder, chemical fertilizer, composite material, rain, mineral substance and other solid ...