ROI方法1：使用采购申请书进行供应商驱动的表单比较。
ROI method 1: Vendor-driven forms comparison using Request for purchase.
进行这种分析的成本仅限于将信息搜集到详细的采购申请书(RFP)中和计算回响应中的总成本。
Your cost of doing this analysis is limited to gathering information in a detailed request for purchase (RFP) and evaluating the total costs in the responses.
采购公司应将代理申请书密封，按投标邀请书中规定的时间和地址提交借款人。
Purchasing company should seal up the application and submit to the borrower according to the date and address stipulated in tendering invitation.
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