Bidders must submit an electronic version of their proposal in a PDF file, preferably a single file if 20 MB or less. The bid proposal must comply with all requirements contained in the RFP.AHA utilizes the Bonfire e-procurement platform to host all competitive solicitations. Exhibit A Bid Response Packet: Every bidder must fill out and submit the complete Exhibit. Bid Response Packet. (a). How to submit Bids or Proposals.