从“三封锁”到919项专利，光威复材领跑中国碳纤维产业化

Group 1 - The article discusses the innovation and brand development of the carbon fiber and composite materials industry chain in Weihai, highlighting the achievements of Weihai Guangwei Composite Materials Co., Ltd. [1] - Guangwei Composite Materials is a subsidiary of Weihai Guangwei Group, focusing on the research and production of carbon fiber and composite materials, with six major business segments including carbon fiber, prepreg, composite products, wind turbine blade carbon beams, aerospace engine shells, and carbon fiber production equipment [1] - Guangwei Composite Materials is the first domestic manufacturer to achieve industrialization of continuous carbon fiber production technology and has pioneered the application of domestic carbon fiber in high-end fields such as aviation, aerospace, and wind power, filling a technological gap in the country [1] Group 2 - The company faced significant challenges during its early stages due to foreign restrictions on carbon fiber products, technology, and equipment, particularly in the production technology of carbon fiber precursor [2] - In response to these challenges, Guangwei Composite Materials established a specialized R&D team to study the preparation principles of carbon fiber precursors and collaborated with domestic universities and research institutions to overcome technological bottlenecks [2] - The successful development of T300-grade carbon fiber precursor with independent intellectual property rights marked a significant breakthrough for the company, achieving performance indicators that meet international advanced levels and breaking foreign technological monopolies [2]