Core Insights - The successful completion of the project marks a significant step for Changyang Technology from technical research to commercial application [1][2] - The project focuses on the development of low-cost CBDO and high Tg, impact-resistant transparent copolyester, aligning with the trend of green manufacturing and sustainable development [1] Group 1: Project Overview - The project is part of the 2021 National Key R&D Program aimed at the preparation and industrialization of low-cost, high-performance bio-based polyesters and polycarbonates [1] - The project team has successfully developed a low-cost CBDO synthesis process and has made breakthroughs in the formulation and preparation technology of copolyester films [1] Group 2: Technical Achievements - Key performance indicators such as visible light transmittance, mechanical strength, and weather resistance of the products have met the contractual requirements [1] - The expert review team acknowledged the project's demonstration effect in collaborative innovation between industry, academia, and research [1] Group 3: Future Directions - Changyang Technology aims to leverage its extensive technical expertise in optical film materials to accelerate the research and application of bio-based materials in functional films [2] - The company is committed to supporting China's transition from a "material power" to a "material strong power" [2]