1. Effective electronic receipt is needed for filter product exchange within 14 days after purchase.

  2. Products can be exchanged if there is a quality problem. We will pay for delivery cost.

  3. Manual fault will not accept for product exchange.

  4. Filter products can be exchanged provided that the products are new, unwrapped and not yet used, however, you can only exchange once. We provide direct quality checking service.

  5. Refund policy is not available.

  6. The difference will not be returned if the price of the exchange item is lower than the original one.

  7. We reserves the right for final decision.