collaborated with a daily-use home brand to customize precision hardware buckles for thermos cups. Using 304 stainless steel material, formed by precision stamping and quenching processes, the buckle thickness is 0.8mm with excellent toughness. The push-type opening and closing design can be operated with one hand, suitable for various scenarios such as car use, office and outdoor. The sealed contacts fit the cup mouth accurately to effectively prevent leakage and spilling. The surface is electrophoretic rust-proof treated, wear-resistant and not easy to scratch. Matte and bright textures can be customized according to needs to adapt to different cup body designs. This customized buckle helped the partner increase the qualification rate of thermos cup products to 99.9% and sales by 53% year-on-year, becoming the core supporting product for daily-use thermos cups.