Recently, dendritic and hyperbranched polymers have become the core driving force for the upgrading of automotive coatings due to their unique three-dimensional structure and excellent performance. They have been widely applied in OEM paint, refinish paint, anti-corrosion coatings and plastic part coatings, promoting the transformation of automotive coating towards "more environmentally friendly, more durable and smarter". With advantages such as highly branched structure, abundant terminal functional groups, low viscosity and high solid content, these polymers effectively solve many pain points of traditional automotive coatings. In the field of OEM clear coat, products modified by them have a crosslinking density increased by more than 40% and a VOC content of ≤5g/L, while achieving a balance between 3H hardness and elongation at break of over 300%, which have been successfully applied to Geely and other whole vehicle enterprises. In terms of automotive refinish paint, hyperbranched modification technology shortens the surface drying time of the coating to within 2 hours, improves construction efficiency by 30%, and achieves 1-level adhesion, adapting to various body repair scenarios. In the field of anti-corrosion protection, the dense coating constructed by dendritic macromolecules can pass the salt spray test for more than 10,000 hours with a protection life extended to 15 years, providing long-term protection for special vehicles and vehicles used in coastal areas. To address the problems of automotive plastic part coating, such polymers achieve 5B-level cross-cut test results through interface bridging, completely solving the industry pain point of poor adhesion. As Asia's first high-tech enterprise engaged in the R&D and production of dendritic polymers, Weihai Chenyuan Molecule and other enterprises have achieved industrial breakthroughs, breaking the European and American technological monopoly. Their products have entered the automotive industry chain through supporting cooperation with many leading enterprises. In the future, with the development of customized molecular structures, such polymers will also expand to emerging scenarios such as new energy vehicle battery pack protection, continuing to lead the industry upgrade. For more information, you can click: https://www.tiktok.com/@mia_iot