Roofing main waterproof layer polypropylene construction Which is good before, you should focus on drainage and structure complex detail node processing and additional sealing layer paste. The corner shop should add an additional layer; yin and yang angle, etc. are made of R = 20mm rounded. Polypropylene picture polypropylene manufacturers, polypropylene, Shouguang Tianxiang water provided by Shouguang City Tianxiang waterproof material plant. Shouguang City Tianxiang waterproof material plant (www.txfscl.com) strong, credible, Shandong Weifang waterproof, moisture-proof material industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shouguang Tianxiang waterproof and you hand into the brilliant, for a better future!