Since this is my first time to order a product from abroad, I am more concerned about the warranty. I was worried that it would be difficult to claim my rights in case of quality problems with the product. So I asked about the warranty policy before I placed the order. The seller told me that the whole order is guaranteed for 1 year. But need video or photo records from the receipt of goods, inspection, installation of the whole process, to determine whether it meets the warranty conditions. Although this is a bit cumbersome, but in order to be able to meet the warranty conditions, I still filmed all the relevant content, as a proof of the warranty in the future.