授权书+商业发票CCPIT认证
都要认证正本文件的 ！

原则是要保持一致的，但是在实际操作过程中，国外客户为了少交税，因此通常都是要求把金额做低的，这个可以按照客户要求来做，但是需要注意一点，确保你拿到了全部的货款，否则到时候客户按照低金额的发票值来付货款就麻烦了。

Principle is to keep consistent, but in the actual operation process, the foreign customers to pay less, so is usually required to do the amount of low, this can be done according to the customer request, but need to pay attention to point, make sure you get the full amount, otherwise when the customer according to the low amount of invoice value after the payment is in trouble

商业发票认证有的贸促会需要提供报关单为佐证，证明金额一致性，如果贵司提供不了可以找我们出具，不需要提供报关单。

For commercial invoice certification, some CCPIT needs to provide customs declaration as evidence to prove the consistency of amount. If your company cannot provide it, you can ask us to issue it. There is no need to provide customs declaration.