All users who access this official website, browse electric bicycles, sports water bottles, universal cup holders and matching accessories, and submit online purchase orders are deemed to have fully read, understood and voluntarily accepted all clauses of these Terms and Conditions. We reserve the right to revise, update and adjust policy content at any time according to business development needs and standardized platform operation requirements. All updated terms will be publicly displayed on the official website in real time without separate individual notification. Users’ continuous website browsing and purchasing behaviors after policy updates constitute automatic recognition and acceptance of the latest revised content. We recommend all customers regularly check this policy page to keep abreast of updated rules and maintain standardized shopping procedures. All displayed products are subject to real-time inventory status. We reserve the right to adjust product specifications, sizes, colors, material textures and structural designs, suspend product sales, limit single-account purchase quantities and cancel abnormal orders caused by system pricing errors, inaccurate product information, sudden inventory shortages and suspected fraudulent transactions. If order cancellation is required, we will issue official notifications and complete full refunds through the original payment channel within three to five business days. Customers bear full responsibility for submitting accurate, complete and valid shipping information during checkout. We are not liable for delivery failures, package loss, repeated shipping costs and logistics delays caused by incorrect or incomplete information provided by users. All order expenses including product prices, shipping fees and international import taxes must be fully paid by customers at checkout. All return and exchange behaviors must strictly comply with the official Return and Exchange Policy. Assembled, used, worn, cleaned, stained, artificially damaged, privately modified and improperly maintained products are non-returnable and non-exchangeable due to electric equipment and daily accessory product attributes and secondary sales protection standards. Electric bikes with riding traces, electrical failure and surface wear, water bottles with internal stains and sealing damage, and cup holders with structural looseness and scratch marks cannot be returned to ensure unified product quality and safe usage experience for all users. All users agree to use the website and purchased products in compliance with local commercial laws and product usage specifications. Users must inspect product integrity and structural normality before formal use and bear full responsibility for equipment failure, structural damage and performance attenuation caused by improper operation, overuse, violent collision and non-standard maintenance. We reserve the right to refuse service and terminate transaction qualifications for users who violate platform rules and abuse after-sales rights to maintain an orderly and safe online shopping environment for all customers.