The bid documents must be signed and sealed by the legal representative, otherwise the bid will be rejected. Bidding documents refer to the responsive documents prepared by bidders in response to the requirements of bidding documents, which are generally composed of business documents, technical documents, quotation documents and other parts.

The bid evaluation committee will reject the following bids:

1. The bidding documents are not stamped by the tendering unit and signed by the person in charge of the unit;

2. The bidding consortium failed to submit the same bidding agreement;

3, the bidder does not meet the qualifications stipulated by the state or the tender documents;

4. The same bidder submits two or more different bid documents or bid quotations, except that the tender documents require the submission of alternative bids;

5. The bid price is lower than the cost or higher than the highest bid price determined in the tender documents;

6, the bid documents did not respond to the substantive requirements and conditions of the tender documents;

7. The bidder has colluded in bidding, fraud, bribery and other illegal acts.