final invoice meaning in English

最终发票

Once again we use a single xquery to create the final invoice
同样，我们使用单个xquery创建最终发票。
8 payment for each despatch will be against b / l copy and final invoice copy
8余款在发货前根据提单复印件和最终的发票复印件支付
We used to work between 30 - 50 % in advance with order confirmation , and the final balance with shipment notification . sometimes the final invoice has differences with the proforma
请问他最后一句话是什么意思啊?为什么说有时候最终发票会和形式发票有差异啊?我看不懂啊
In case analysis is not carried out at the discharging port within 30 days after completion of discharging in china , the loading port results shall form the basis for final invoice
如果完成在中国的卸货以后30天内没能在卸货港口做出分析报告，装货港口的结果将成为最终票据的依据。
The price quoted include a discount of 5 % which must be shown on your final invoice , but is to be the subject of a separate credit note , the amount of which is to be deducted from your drafts
信用证所列价格包括5 %折扣在内，最后发票应开列未扣除5 %折扣的价格，但须另出一份扣佣通知书，汇票金额则扣除此项折扣金额。