Lightweight transformation has become an irreversible mainstream trend in the global automotive manufacturing industry in 2026, greatly driving the technical upgrading of automotive injection molded parts. More auto manufacturers are choosing high-performance modified plastics to replace traditional metal components, which effectively reduces vehicle weight, lowers energy consumption and improves driving endurance. Advanced injection molding technologies such as multi-shot molding and insert molding are widely applied to produce high-strength functional parts including vehicle brackets, backrest structural parts and electrical isolation components. Modern optimized molding processes can reduce part weight by 10% to 15% while ensuring structural stability and safety performance. With the continuous improvement of vehicle energy-saving and safety standards, high-precision, lightweight and integrated automotive plastic parts will further replace traditional hardware parts and expand market application space.