Uniform density ensures consistent fiberglass content and mechanical properties of the composites products. Uniform power dstribution ensures good mat integrity, little loose fibers and small roll diameter. Excellent flexibility ensures good moldability with no springback at sharp angles. Fast and consistent wet-out speed in resins and rapid air lease reduce resin consumption and production cost and enhance productivity and mechanical propertes of the end prodcuts. The compoiste products have high dry and wet tensile strength and good transparency.