After the goods arrive, we will ask you to pay the balance, we will place your order with the factory. When a spare part arrives, we will notify you and take a video, take a photo if you request it, and we will also inform you about the quantity of spare parts (if any) due to the time of closing the order with you until factory inventory has changed. You can either wait for the spare part to arrive for a later order or remove it from the order list.