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How many years should the bidding project data be stored and preserved?
Reasonable division of archives classification and storage period. General engineering files should be kept for five years in principle, and major engineering files should be kept for eight to fifteen years. Government procurement bidding documents shall be kept for 15 years, and project bidding documents shall be kept for 20 years.

Filing time of bidding data:

1. Principal-agent agreement: Before the bidding documents are sold, they must be returned, otherwise the bidding documents will not be stamped, and the situation in special areas must be submitted in advance and reported to the company leaders for instructions.

2. Other written materials: complete materials must be returned within 15 days after the announcement of winning the bid, and the contents of the materials meet the requirements of these Measures. Otherwise, stop all business of the corresponding branch or project department from 20 days after the release of the winning company.

3. 1 Before the data is sent to the head office, the electronic data compression package must be sent to the mailbox of the comprehensive bidding department.

After the bid opening, you will not be able to get your bid documents back. However, there is a situation that can be retrieved, that is, the bid is abolished before the bid evaluation, that is, the bid is abolished or submitted, and the bid opening list is not stamped and signed, and the bid is directly abolished. You can get the reimbursement back.

According to the provisions of Article 42, purchasers and procurement agencies shall properly keep the procurement documents of each procurement activity of government procurement projects, and shall not forge, alter, conceal or destroy them. The storage period of procurement documents shall be at least fifteen years from the date of completion of procurement.

No matter whether the bid is won or not, the bidding documents are not returned, and all of them are kept by the agency. The unsuccessful bidder generally keeps the original and the copy will be destroyed. Remember "original archive copy destroyed".