In order to protect your legal rights, we warranty for an exchange or refund if product defects occur is in following cases.

1 Malfunctioning Products:
In case our PCB or assembled boards are not usable due to our fault, you can ask for compensation . Customers can submit RMA for an exchange or refund request.

 2 Wrong dispatching:
 If we have dispatched wrong item to you, please just request a RMA (Return Merchandise Authorization) from us . We will get back to you as quickly as possible.

 3 DOA (Dead on Arrival), Customer received defective items or missing items
 Please refuse the package (from the courier) if it looks like having been opened or visibly damaged or the weight is lighter than we told, and contact us to let us know. If you have accepted a damaged package and the products inside are physically damaged or nonfunctioning or missing products, please request a RMA (Return Merchandise Authorization) in 5 days of receipt. Please provide the follow information for us within 5 days after you have received the package so that we may file a claim with the shipment carrier:
 •Photos of the front and back of the shipment box, it can clearly show the shipping information, such as tracking number, delivery address and so on.
 •Photos of the front and back of the product that has physical damages(if you received defective parts).
 •Photos of showing the actual weight on electronic scales (if you received missing parts).

 4 Lost Package
 If package not received due to our factors (If necessary, customer have to pay for import tax and provide the necessary information under the requirement of local custom.) and beyond intended date of receipt, please contact our customer service center directly. After we confirm it, we will refund or send another package . We have been cooperating with the most reliable shipping companies and such accidents have never happened yet.
 Uniformed terms for all returning and exchanging.
 • All returned items must be in original condition with packaging, unused, and undamaged.
 • For returned package, it must be with a receiving RMA approval before shipment .
 • For returned package, it must be with a RMA (Return Merchandise Authorization) number in the package .
 Remarks:
 1. We have listed every possible accident that may happen. But don’t worry! Our records just show 0.2% possibilities all above may occur.
 2. If you do not provide information regarding DOA (Dead on Arrival) item in 5 days upon receipt will cause the RMA to be denied.