Warranty: the guarantee of our most products is one year. Before shipping out, all goods have been double verified.
If you have any using problem of the products which buy from DaoSmart.Com, please feedback to us first, and we will discuss the issue with you. Via our technical support, we can dig out your using problem via our technical support in most of cases.
Lost Products: If products get lost in delivery, or you still do not get your item for a long time, please contact our customer service timely. We will deal with this ASAP. Please do not deal with it all by yourself, we want you communicate with us. Usually, we will provide tracking number and tracking link timely. If products get lost on the way and we get confirm from couriers, we will arrange redelivery for your products.