... UPS, Fedex, a fast and safe way for shipping, normally 3-5 working days for delivery;2. By Air: ... .Products of unknown sources or without valid working will not be accepted.3) Saving way: If part of led ... are easy to replace by maintenance technician, we will send parts to you to replace. for example ... pay shipping for return to us, otherwise, we will pay the shipping cost for sending back to customers ...