Glass-fiber fabrics are major reinforcement material for composites of wind turbine blades, which are mainly used in the main bearing and case parts of wind turbine blades for the exceptional mechanical performances and outstanding weatherability. As high-performance products of high-modulus products, the E7, E8 and E9 glass-fiber fabrics are adapted to the development trend of large-sized, light-weighted wind turbine blades as part of the solution for high-power wind turbine blades.