Investment Rating - The report maintains a "Positive" investment rating for the basic chemical industry [4] Core Insights - The green polyester industry is expected to enter a rapid growth phase driven by strong demand for low-carbon consumption [10][35] - New technologies in the green polyester sector are anticipated to unlock significant development potential, moving beyond the limitations of traditional recycling methods [12][21] - The biological method in recycling technology shows distinct advantages over chemical methods, with a focus on lower energy consumption and higher flexibility in product forms [29][34] - The development of bio-based materials is gaining significant attention and is on the verge of commercialization, with key players making substantial investments [35][39] Summary by Sections 1. Rapid Development of the Green Polyester Industry - The green transformation of plastics is primarily through recycling and bio-based materials, with polyester being the fastest-growing type [10][12] - Current recycling methods are limited, but new technologies are expected to create new opportunities in the industry [10][12] 2. New Technologies in Green Polyester - The physical recycling method is mature but limited to bottle flakes, while new technologies can expand raw material sources significantly [12][22] - Polyester's properties facilitate technological advancements, making it easier to find bio-based alternatives [21][23] 3. Advantages of Biological Methods in Recycling - Chemical recycling methods are established but have limitations in temperature and product forms, while biological methods are entering commercialization with favorable market feedback [29][30] - Companies like Carbios and domestic firms are leading the way in biological recycling technology [34][35] 4. High Attention on Bio-based Materials - The development of bio-based materials, particularly using FDCA to replace PTA, is gaining traction with significant investments from major industry players [35][39] - The commercialization of bio-based polyester is expected to happen soon, driven by clear application scenarios [35][36] 5. Investment Recommendations - Companies such as Wankai New Materials and Xin Fengming are positioned well in the green polyester market, with strategic investments and projects underway [35][40] - The report highlights the potential for high returns due to the strong demand for green polyester products [35][40]