Jianfeng®, focusing on sustainable and low-carbon functional materials, biobased and degradable materials, and new material modification research and development as well as technical services. Topcircle® products include general plastic series (TcycleGP®), engineering plastic series (TcycleEP®), and special plastic series (TcycleSP®) brands and technical services. The product range includes but is not limited to rPC (PCR PC®), rABS (Ebis®), rPET (TC-Rester®), rPA6/66 (Nylon®), rPP (Baolbao™), and rPE (Pus™). These cover R&D innovation, testing analysis, production, sales, and technical services, providing specialized, high-performance, functional, and customized innovative solutions for new material systems. Jianfeng® encompasses nine types of sustainable products, innovative technologies, and comprehensive services: recyclable innovative plastics and technology; new material modification and technology; biobased and degradable materials and technology; cutting-edge product design and service; special and composite materials and technology; new functional material design, development, and customization; IP licensing cooperation and comprehensive services; full industry chain design innovation and new business models; intelligent equipment and cloud data services. Jianfeng® has obtained management system certifications such as ISO9001, ISO14001, and ISO45001, and has received third-party global authoritative certifications including GRS, SCS Global, UL, and TUV. Certifications cover PCR, OBP, Oceancycle, ITE, and compliance with ROHS, REACH, PAHS, FDA, and California 65 regulations. Jianfeng® has led the formulation of multiple national, industry, and group standards and owns a large number of patents and trademarks. Jianfeng® is committed to becoming a digital-driven, technologically innovative, and talent-winning functional professional platform, adhering to the mission of "contributing to human development," integrating corporate development with human development and social responsibility into a shared and mutually beneficial development concept, and striving to continuously improve products, services, business models, and innovations in intellectual property and technology.