1.Please understand the order invoice is offered by the corresponding supplier. To get the invoice, please contact the supplier directly from order details page.
2.If you only need the transaction fee invoice, you can go to My Alibaba- All Order-View More-Payment history-Transaction fee invoice. Refer to picture 1.
3.If you need the contract, you can go to My Alibaba>Orders>All Orders-View More-View Contract at the right side of "Order Details" area. Refer to picture 2.