1、100% money back guarantee or exchange the same class of the products.
  2、Full refund will be issued upon receipt of the Deffective Item.
  3、Please be advised that shipping and handling cost are not refundable.
  4、Buyers must be returned the defective products within 7 days from the date when product received.
  5、Refund or Replacement will be sent after we received your returning item.
  6、In all cases, buyers pay shipping at their own cost to return products for exchange or refund.

 Site sale of products promise:
      One year free maintenance, free technical support. (to and from shipping costs to pay their own).