几批研究者孜孜不倦的付出，助力我国实现了高端碳纤维的「无中生有」和「由弱变强」，让中国碳纤 维从「被人卡脖子」，变成了今天的「占据全球产能的半壁江山」。 碳纤维曾被「两院院士」师昌绪形容为跟芯片一样重要的东西。 它的重量只有钢的四分之一，强度却是钢的七到十倍，太空环境下能耐受上千度的高温，零下两百度仍 能保持稳定。 这种优越的性能，让它成为「现代材料之王」。 往大了说，它可以制造洲际导弹和运载火箭的耐高温外壳，可以制造飞机的轻质航空机身，制造顶级跑 车里坚固的驾驶座舱。 还有风力发电的叶片、高铁的车头、氢能汽车的储氢罐，"低空经济"中的飞行器，碳纤维都不可或缺。 但是曾经，对于中国来说，碳纤维却是一个被死死卡住脖子的痛点。以日本东丽为首的日本和美国企 业，通过多年的技术垄断，占据了全球大部分市场份额。 01 2005年左右，因为高性能碳纤维是典型的「军民两用」敏感物资，日美对中国实行了出口管制。你能在 市场上买得到波音787，但买不到造飞机的用的高端碳纤维，更买不到背后的科研技术。 那几年，正值国产大飞机项目酝酿启动，国防武器高速发展，新一代运载火箭和卫星急需升级。很多高 端制造领域，图纸都画出来了，但因为缺 ...

Group 1: Economic Growth and Innovation - In Jilin Province, high-tech industry sales revenue increased by 8.69% year-on-year from January to May, driven by structural tax reductions and other measures [1] - The manufacturing sector, particularly digital product manufacturing and high-tech manufacturing, saw sales revenue growth of 4.28% and 5.25% respectively, contributing to high-quality economic development [1] Group 2: Compliance and Taxation - Jilin Province's tax authorities are collaborating with high-tech enterprises to strengthen compliance systems, providing comprehensive guidance and tracking to ensure legal and compliant operations [1] - The company Luren Socks has transformed its operations through digital manufacturing, significantly improving production efficiency and product quality [2] Group 3: Tax Benefits and Credit Ratings - Luren Socks has benefited from tailored tax services, receiving over 2.11 million yuan in tax incentives in 2024, and has restored its tax credit rating to A-level after previously being downgraded [3][4] - Jilin Chemical Fiber Group invested 762 million yuan in R&D from 2017 to 2024 to overcome technical barriers in high-performance carbon fiber, achieving a 31% increase in sales revenue to 10.264 billion yuan in the first five months of the year [5][6] Group 4: Innovation and Research - Jilin Chemical Fiber Group has established a comprehensive tax compliance culture, integrating risk management into daily operations and achieving significant improvements in efficiency [5] - Long光卫星技术有限公司 has developed a robust tax compliance management system, ensuring that compliance is embedded in every operational aspect, leading to substantial tax benefits [9] Group 5: Future Prospects - Long光卫星技术有限公司 is focusing on artificial intelligence as a key R&D direction, emphasizing the importance of compliant financial management for long-term development [8] - The Jilin Provincial Taxation Bureau is committed to supporting technology innovation by optimizing tax services and implementing favorable policies for high-tech enterprises [9]