英语翻译哦，谢谢啦

Dear Sir,

We have received your last payment. It is no question that we may produce the product here. It is rather more economical (or cheaper, benefitial, better idea) if you do that yourself.

The existing PO (purchasing order) is about to complete. When do you like it delivered, please? Have you completed the procedures your end? When can we expect the payment from your customer?

Hello!
We have received the payment for our last business. It's no problem for us to do the production this time but we think it would be much cheaper if you do it by yourself.
The old orders we are going to finish so would you pls. tell us the time of this shipment and if all the formalities are ready now. When can we receive the payment from you client this time?

dear sir:

we have received your payment for the last time, the products we can produce, but if you do it by yourself may be cheaper.
we will finish the products in the last order soon, i want to know the deliver time from you and also want to know whether the terms are over? when we could receive the payment from your customer?

Dear Sirs,
we have received your payment of goods last time and we can produce the product but it is rather profitable for you to do it yourself. We are going to finish the old order.When will you need the delivery? When will we receive your customer's payment?