This mat is mainly used as excellent substrates for waterproof roofing materials. it is charaterized as high tensile strenth , corrossion resisitance , easy soakage by bitumen, and so on. The longitudinal strenth and tear resistance can be improved further by incorporating reiforcements into the tissue accross its whole width. The waterproof tissue made of this material is not easy to crack, ageing and rot. Other advantages of waterproof roofing tissue are high strenth, excellent uniformty, good weathering quality and leaking resistance.