Through market research, we discovered a new way to improve the toughness of plastics. This new method is not only technically breakthrough, but also economically superior. This approach allows the plastic to achieve significant improvements in durability and impact resistance by optimizing its molecular structure. According to experimental data, the impact resistance of plastic products manufactured using this method has increased by 30%, while production costs have dropped by 15%. These technical advantages have greatly enhanced the competitiveness of plastic products in the market. In addition to the technical principles, we also analyze its broad application prospects. The method can be applied to a variety of plastic products, including packaging materials, home appliance casings and automotive interior parts. Practical application cases show that after a plastic packaging company applied this method, its product return rate was reduced by 20%. In short, this new method has important potential in improving the overall performance and market competitiveness of plastic products, and provides valuable reference and reference for relevant companies in the industry.