Dear sirs,
Thank you for you letter of May 25, we are sending you here with the required Proforma Invoice in triplicate. Please note that our offer remains valid until November 15.
Please place your order as soon as possible, because we are running out of our stock.
Yours sincerely
(Your name)
形式发票(PI)的作用:形式发票列明了商品名称、规格、产地、价格、数量、付款条件交货期、包装等内容，买家可以使用PI申请进口许可和外汇，卖家可以使用PI进行报价，代费报价单。
（本文内容根据网络资料整理，出于传递更多信息之目的，不代表连连国际赞同其观点和立场）
