1. According to Netease News Network, the raw materials are different: sbs waterproof material mainly adopts composite tire base polyester tire base, and polypropylene cloth waterproof coiled material adopts polymer PE film.

2. Different safety: the raw material of polypropylene fiber is polyethylene polymer, which is non-toxic, tasteless and environmentally friendly. The raw material of sbs coil is asphalt slag, which is brittle and heavy, short in service life, dangerous in construction and high in cost.