Before revision: tpo roofing material installed on a flat roof Materials Thermoplastics Thermoplastics may include polypropylene (PP), polyethylene (PE), block copolymer polypropylene (BCPP), and others.
After revision: Materials Thermoplastics Thermoplastics may include polypropylene (PP), polyethylene (PE), block copolymer polypropylene (BCPP), and others.