Chopped Strand Mat (CM)- The most popular type of fiberglass reinforcement is used in virtually all FRP. Planes, trains, cars, and trucks use fiberglass. In the industrial sector, tanks (chemical, underground, wastewater), vases, corrugated and flat sheets, flower boxes are manufactured using fiberglass. Available in CM 230 (also used for water-proofing), CM 300, CM450, and CM 600.