Quality assurance and long-term supply Large quantities offer preferential pricing, welcome to come and discuss cooperation. Regarding color differences, due to differences in individual monitor's brightness and contrast settings, there may be slight color differences between the picture and the actual item. Regarding the smell, freshly manufactured shoes may have some glue odor, which is not related to quality. The smell will dissipate if placed in a well-ventilated area. Regarding any issues with the shoes sold after purchase, please contact our customer service immediately to explain the situation. We will take full responsibility and will reimburse the return shipping cost according to the original shipping cost.If you order the wrong size or color, the return shipping cost is borne by the buyer! Regarding the sizes, we have had models try them on to provide a reference, but the final decision is yours. Please do not blame the customer service afterwards If you want to exchange for a different size, the buyer is responsible for the return shipping cost Regarding the default couriers, they are Shentong Express, Best Express, Aneng Logistics, and Yousu Logistics. If you need other couriers, please contact customer service to pay the price difference. Regarding issues such as sole separation, adhesive failure, damage, severe stains, or incorrect shipment, our company guarantees replacement Small loose threads, minor stains, slight color differences, and glue smell are not considered quality issues. The service philosophy is to assist small and medium-sized sellers on various platforms to start their businesses and promote better profits for offline sellers