If you receive a part which is not working or broken,please contact with the sellers firstly, send messages to explain the problems, we will try our best to solve your problems, please don't give a bad feedback directly without any communication.
If you bought the item by mistake, please choose personal reasons.
If you are satisfied with our part, please give 5 stars to us, we will be very grateful for your good feedback and you can get some discount for your next order.
If you don't receive the items in 60 days, you can open a dispute to get a refund before the protection finish.
About the refund:
Aliexpress process the refund for dispute and order cancellation in 7-15 days. if you don't receive the refund after 15 days,you can click buyer center to find the solution or contact with the Aliexpress human servive.
About the Wholesale:
If you want to buy a big quantity,for example 50pcs, you can contact with us with email or send messages on Aliexpress to get the best price