The situations of invalid bidding include: if the interests of legal persons, other organizations or individuals may affect the fairness of bidding, they may not participate in bidding. If the person in charge of the unit is the same person or different units with holding and management relations, they shall not participate in the bidding of the same bid section or the bidding of the same project subject to tender without dividing the bid section. In violation of the provisions of the preceding two paragraphs, the relevant bidding is invalid. Where a tenderer accepts the bid of a consortium and conducts prequalification, it shall form a consortium before submitting the application documents for prequalification. If the consortium adds, reduces or replaces members after the prequalification, its bid will be invalid. If the parties to a consortium bid separately in their own names or participate in the bidding of other consortia in the same bidding project, the relevant bidding is invalid. In addition, according to the provisions of relevant laws: 1, the bidding agency violates the provisions of this law and discloses information and materials related to bidding activities that should be kept confidential; 2. The tenderee of a project that must be subject to tender according to law discloses to others the names of potential bidders who have obtained the tender documents, etc. 3, the tenderer in violation of the provisions of this law, and the bidder on the bid price, bid plan and other substantive content negotiations; 4. Bidders collude with each other or bid in collusion with the tenderee; 5 bidders bid in the name of others or resort to deceit in other ways to defraud the bid; 6. The tenderer shall determine the winning bidder among the winning bidders recommended by the bid assessment committee according to law.

legal ground

Article 52 of the Bidding Law of People's Republic of China (PRC) * * * The tenderee of a project that must be subject to tender according to law discloses to others the names and quantities of potential bidders who have obtained the bidding documents or other bidding conditions that may affect fair competition, or discloses the pre-tender estimate, and may be given a warning and fined between 1 10,000 yuan and100,000 yuan; The person in charge directly responsible for the unit and other directly responsible personnel shall be punished according to law; If a crime is constituted, criminal responsibility shall be investigated according to law. If the acts listed in the preceding paragraph affect the result of winning the bid, the bid will be invalid.