The world famous fast food company McDonald's all over the world more than 100 countries, customers want to do a plastic toy lens is not easy to deform, meet the environmental requirements, but each country has different environmental standards, so how to ensure that meet the different environmental needs, while meeting the performance of the material is the problem faced by most toy industry. Solution: In the process of project research, we found that all environmentally friendly lenses on the market would be deformed. As the designated supplier of McDonald's, Donghua actively organized technical forces to optimize the customer product structure, which not only reduced the customer cost, but also solved the problem of lens deformation, and the final product was put into production smoothly.