我这边大货已经完成了，我要发发票和箱单给客人问他们要钱。 请问用英文怎么发？

To customer:

I'm glad to inform you that we have completed the delivery of goods. Attached please find the packing list and the invoice. We are waiting for your payments.

Thank you.

I have completed the delivery , I will send the invoice and the packing list to the guests for money.

I have finished delivery of the goods. I'm going to send the invoices and packing lists to the customers for their payments.