汉译英：外贸 空运类

你看这种文件（参见附件）是否可以代替合同。我们和客人结帐，一向都是用的这个。

热心网友

Pls let us know whether we can use the document(see attachment) instead of contract.We use this one for payment with our clients when we do business.JUST FOR YOUR REFERENCE

热心网友

Pls let us know whether we can use the document(see attachment) instead of the contract,as we used to do that for payment bettwen our client.