Blades are one "24V DC Cooling Fan" of the core components, parts magnitude of value from the point of view of the blade maximum magnitude of value, accounting for about 25% of the entire cost of the equipment; at the same time, the cooling fan blade wind turbine industry is part of the uncertainty higher, the market capacity is large, clear profit model composites industry. "24V DC Cooling Fan" turbine blade production technology from foreign companies, according to the standards of foreign production, raw materials imported from abroad, companies do not have independent research and innovation initiative. Experimental development blade design and manufacturing, production processes, "24V DC Cooling Fan"mold equipment in China has not mastered a number of key technologies.