There is a reason why the quotation prefers excel format. Excel workbook comes with three worksheets, and you can add worksheets without restriction. You can also copy between worksheets. Many times, the quotation is a variety and there are several models. A variety is a workbook, and several models are several worksheets. At a glance, the document is independent and standardized. Generally, you don't need to fax the quotation, just send excel to the seller, and the seller will fill in the price and send it back.