Warm tips:1. All products are inspected by QC before shipment to ensure that they work normally2. All products are packed with bubble protection and safe packaging before shipment to ensure that the goods are in good condition.3. All orders will be delivered at the first time.4. You will receive warranty and after-sales service from the date of purchase.5: After you receive the purchased items, please check and test them before using them.6: Please ensure the correct use of the required items, incorrect installation may cause damage to your equipment or products, we are not responsible for any loss caused by improper operation.Return and exchange service:1. We shall not be responsible for any damage caused during installation or any error made by the installation personnel.2: When you receive a package, make sure it is complete. If the packing is damaged, please take photos or video to settle the dispute.3. If the product does not work normally, please contact us for professional advice first, which will help you solve the problem. If you give a direct negative comment, it will not help solve the problem and we will think that you have given up the after-sales opportunity.Finally, please allow the color error and manual measurement error caused by different display equipment.Thank you for your understanding. I hope you enjoy your shopping.