急”Proforma invoice”,invoice”異同 - Yahoo!奇摩知識+

~急!"Proforma invoice"與''invoice"有何不同?"Proforma invoice"的效力等同於''invoice"?能拿來當作報稅的進貨憑證? ... ~急!"Proforma invoice"與''invoice"有何不同? "Proforma invoice"的效力等同於''invoice"? 能拿來當作報稅的進貨憑證?

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