HongyuanTM TPO waterproofing membrane is made from thermoplastic
polyolefin as the principal polymer through advanced extrusion
process, resulting in a product combining the durability and
weatherability of ethylene-propylene rubber and the weldability of
polypropylene. The use of polyester reinforcing fabric further
strengthens the tensile properties as well as the resistance to
tearing and puncturing of the membrane, which are the keys to the
effectiveness of mechanically fastened roofing system.