I do not recommend buying this product on aliexpress, and in general, all products that imply expensive repairs in the event of a breakdown. Service couriers often do not have terminals, and the promise that they will send you a check by e-mail remains just a promise, you will not be able to get anything from them, except that they will refer to their partners in everything, whom they themselves have chosen. You will be more or less lucky if a warranty card without a date is included in the box, then the service center will consider the warranty period at least from the date of issue of the goods (since you do not have a receipt confirming the purchase) that it is allegedly a confirmation of purchase is a misrepresentation, purely their internal document and nothing more, since according to the law it is not a document confirming payment without having a cuar code on it.