All products have been checked and packaged in good condition before dispatch. In case the item is defective, please inform us within 30 days after the package successfully delivered, we will do our best to help. Communication is the fastest and most direct way to solve problems. Customer Service Hours: 8:30-17:30 Monday To Friday (Beijing time). Due to time zones, our reply to your questions may not be immediately. If it’s non-workdays, please kindly be patient and wait till Monday.