1. Whenever you have any questions, issues or disputes, please feel free to email me. We believe that effective communication will ensure that the problem is resolved. 2. This product may be sold in multiple locations as the store cannot display too many products. If you need a brand and model, please contact me and we will provide you with a quote, which will be uploaded to the store for you to purchase. 3.If you need technical support or after-sales service, please send us an email. 4. We will ship according to the current software version of the product as shown in the picture. If you need to upgrade or specify a version, please contact us in advance. 5. Due to inventory changes, the product serial number in the picture may not match the actual shipped product. We will ensure that the appearance, quality, and quality of the product are consistent with the picture, and confirm with you before shipment. Please confirm that your shipping address is correct.