Since the 1970s, there have been several reinforcing materials that combine chopped strand mats, continuous strand mats, rovings, and rovings in a certain order.
(1) Chopped Strand Mat + Roving Fabric
(2) Chopped strand mats + rovings + chopped strand mats
(3) Chopped strand mats + continuous strand mats + chopped strand mats
(4) Chopped strand than felt + random roving
(5) Chopped strand mat or cloth + unidirectional carbon fiber
(6) Chopped strands + surface mats
(7) glass cloth + one-way roving or glass rod + glass cloth