Product Introduction: Currently, both domestically and internationally, large and medium-sized fan blades are produced using a step-by-step preparation and bonding molding process. That is, the upper and lower shells and core beams of the blade are made separately before being bonded together as one piece. This process has three shortcomings. First, since the strength of the adhesive is lower than that of the composite material's upper and lower shells, the strength of the bonded blade is far inferior to that of an integrally molded blade (without any adhesive connection). Second, multi-step molding generally makes it difficult to ensure the processing accuracy, bonding positioning accuracy, and compaction during bonding at each section of the shell, core beam, and other components, which directly affects the shape precision and actual efficiency of the molded blade. Unless there are highly skilled technicians and complete mechanized processing equipment. Third, each component in the step-by-step preparation requires a dedicated mold, which leads to many molds, large factory floor area, and long production cycles. The new technology we have invented is to mold the blades in one go with an intelligent core, eliminating the use of any adhesives. This enhances the mechanical strength of the blades, and its direct effect is a significant reduction in material usage. Due to the adoption of the intelligent core, when the blade shell cures, the expansion of the intelligent core creates enough pressure to ensure that the molded shape of the blade matches the designed shape, thus ensuring the aerodynamic efficiency of the blade. Since this high-precision blade shape is achieved by the process itself rather than through the skills of the production workers, the new technology greatly reduces the technical requirements on employees. Lastly, it is very natural that the production cycle for one-time molding blades is significantly shorter than traditional molding methods. Technical specifications: High precision in shape, consistent with the mold cavity, thereby eliminating the potential risk of inconsistent actual blade shape and reduced aerodynamic efficiency due to processing errors; 1) High surface finish. 1) No adhesive marks, resulting in greater output from the blades under the same wind conditions; 2) Since no adhesives are used, the service temperature range of the blades will be wider, and the risks of lightning breakdown and rainwater penetration are avoided; 3) The reinforcing fibers are continuous along the cross-section, preventing delamination or cracking of the upper and lower shell due to poor adhesion; 4) Fewer production workers are required, with lower technical demands on employees, and the molding efficiency is significantly increased; 5) Less material usage, lighter weight, and environmentally friendly. Application fields: Wind power generation, cooling towers, wings, etc. Name: New technology development of a 20 kW wind turbine blade (blade length 4.885m) Process description Note: This blade includes root connection bolts weighing 40 kg, which increases by 10.5% in length compared to another 20 kW blade developed by the National Renewable Energy Laboratory in the United States in 2002, increases by 47% in weight, and has a fourfold increase in ultimate load-bearing capacity.