In the process of electronic bidding, paper documents are unnecessary. The relevant procurement documents of government procurement projects can be saved by electronic files; Engineering construction projects should save corresponding paper documents while storing electronic documents; In the absence of paper documents, enterprises can use electronic documents for the record of voluntary bidding projects.

But some links may still need to use paper documents at the same time, such as bidding. The traditional procurement mode needs to print and bind multiple paper bidding (response) documents, and sign and seal them on the spot. In electronic bidding, although electronic bidding, electronic signature and online delivery are more convenient, paper documents may still be needed in some cases, such as special provisions in bidding documents. When the paper document is inconsistent with the data message, unless there is a special agreement in the bidding document, the data message usually prevails.

In addition, the bidding documents with electronic signature have legal effect, and there is no need to stamp the documents with electronic signature. This means that although paper documents can be used as backup or substitute under special circumstances, in most cases, electronic bidding documents and electronic signatures are enough to meet the needs of bidding.