For example, if you want to issue bonds, you need to tender first, give a reference price first, and then recruit a group of people to buy his bonds. Bids are issued by those who want to buy, and the winning bidder is the last one among those bidders to clinch the deal. Bidding is a trading method used in the sale of bulk goods, the contracting of engineering construction projects and the procurement and provision of service projects under the market economy. Under this trading mode, the purchaser of project procurement (including goods procurement, project contracting and service procurement) usually acts as a tenderer, and sends out the information of bidding procurement by issuing a tender announcement or issuing a tender invitation letter to a certain number of specific suppliers and contractors, and puts forward the nature of the required procurement project and its quantity, quality, technical requirements, delivery date, completion date or service provision time. And the qualification requirements for other suppliers and contractors, indicating that the suppliers and contractors that can best meet the procurement requirements will be selected to sign procurement contracts with them, and all interested parties will provide quotations for goods, projects or services needed for procurement and other corresponding bidding requirements to participate in bidding competition. After reviewing and comparing the quotations and other conditions of all bidders, the tenderer selects the winning bidder and signs a purchase contract with it.

Bidding is also called bidding for short. Bidding is a kind of commodity trading behavior and two aspects of the trading process. Bidding is an international practice, a product of highly developed commodity economy, and an organized way to choose the best transaction by using technology, economic means and market economy competition mechanism. In this way, the tenderer attracts many bidders to compete on an equal footing under the same conditions through the pre-announced procurement and requirements, and organizes experts in technology, economy and law to comprehensively evaluate many bidders according to the prescribed procedures, so as to select the winning bidder for the project. Its essence is to get the best goods, projects and services at a lower price.

The symmetry of "bidding" means that one party (the tenderer) puts forward its own conditions to attract the other party (the bidder) to buy or sell. So bidding may be for buying or selling (such as land bidding). In government procurement, bidding is a way of procurement.

Bidding is an act of inviting manufacturers who are willing to contract or trade a certain project construction or commodity sales to bid for contractors or dealers. The general procedure is as follows: the tenderer advertises or selectively invites relevant manufacturers, sends bidding documents or attaches drawings and samples; Bidders shall submit bid documents as required; Then, under the auspices of a notary public, the bid opening and evaluation will be conducted in public, and those who fully meet the requirements will be the winning bidder; Finally, both parties sign a contract or a transaction contract.

Bidding is a kind of market transaction behavior in which the conditions and requirements of purchasing goods, projects or services are made public within a certain range, many bidders are invited to participate in bidding, and the trading objects are selected according to the prescribed procedures.

Bidding refers to the behavior that bidders actively register or meet the minimum qualification requirements of the tenderer at the invitation of the tenderer, and submit a price to the tenderer in accordance with the requirements and conditions of bidding within the specified time, so as to win the bid. As for the highest price, it is actually a matter of choice. For example, the tender of a project will also include factors such as the quality of building materials, and the general tenderer will consider the final choice as a whole.

Winning the bid means that a bidder is finally selected by the tenderer during the bidding process.