What is your lead time? Usually 1-3 days depends on order qty, final lead time to be confirmed when order is placed. How to deal with the defective item? we have one year warranty dated from the day of shipping, any quality defective, we need you to report to us in two month by photo or video as evidence. if they are defective due to our quality, we give you free replacement in new order. What shipment do you take? Shipment by courier door to door service, by air and by sea are all available for your choice: 1. usually we suggest that for smallquantity or weight less than 20kgs, it sent by courier like DHL / Fedex / UPS / EMS express; 2. for shipment weighs from 20kgs to 500kgs, can be sent by air to the airport nearby to you; 3. for shipment over 500kgs, sent by sea to the seaport nearby to you.