If any products from us goes broken.Pls take the picture,and send it to us,.After we conirm the products already goes broken.,we will products the new products and stock the new parts.After your next order.,We will send the replace products or new parts with the order together.About the broken products,If the broken products is few,,And we will pay the shipping cost for replacement products..Not need to send back to us.After the broken products is more.,you can send it to us in a time.We will pay the shipping cost.