One of our best products, made of high quality Polypropylene (PP) monofilament yarn. Double layers, satin weaving. Very good for equipping filter presses and belt presses, especially in mine, waste water treatment industries. We can heat set and calander the item to make it different air permeability for different filtration request. More information will be available if you contact me with your interests. Packing details: in rolls packed in kinnted bags or in cartons