1.Please confirm the product model and pins if the same before purchasing. If you are unsure about the matching, feel free to send us your model number and prdduct photo to verify 2.Orders will be shipped within 3days 3.If the product is defective, we will provide a full refund or free replacement (return shipping covered by us) 4.For non-quality issues (e.g., wrong model selected by buyer), returns are accepted within 30 days, and the buyer is responsible for return shipping fees If you have any problems after receiving the goods, please contact us within 48 hours, and we will give you a satisfactory solution within 24 hours(excluding weekends)