提单正本已经寄到，要扫描给客户，让他付余款，英语怎么表达

You have received the original bill of lading, and now you need to ask the customer to make the remaining payment. Here is an example of how to express this in English:

"We have received the original bill of lading and have successfully shipped your goods. The remaining payment is now due. Please find attached a scanned copy of the bill of lading for your reference. Kindly make the payment as soon as possible so that we can release the shipment to you. Thank you for your cooperation."