In a global view, yes we do in some cases. However, in the real sense, each vendor on our platform is in charge of defining his/her returns, refund, and guarantee policies either for their shops or for some particular product. Reasons why we encourage all customers to read all shop/product policies before issuing payment.
Muyang ONLY ensures that vendors respect the policies which they publish on our platform.
More details about this are on the
Guarantee and Refund Policy page.