Dear customer, thank you very much for your patronage. We have an authorization certificate issued by the INMISS brand to ensure that all products we sell are authentic. And, we provide free warranty service and return service for the products we sell, but we only provide free return service and warranty service for the products sold by Qishunfa. We are not responsible for any products sold in other stores, so please choose the correct store at the time of purchase. Thank you very much for your support. If you have any questions, please feel free to contact usREAD MORE