1. Bidding information published on the official website of the government. Such as China government procurement platform.

2. Bidding information released by the official media. Part of the bidding information will be published in the designated professional or local news media.

3. The third-party bidding information platform, like the subject matter, collects and integrates the bidding information of all industries in the country, making it more convenient to query.

Bidding is a term in the bidding industry, which means that the tenderer (buyer) issues a tender notice or tender sheet in advance, puts forward the variety, quantity, technical requirements and related trading conditions, and invites bidders (sellers) to participate in bidding at the specified time and place. 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, quantity, quality, technical requirements, delivery date, completion date or service provision time of the required procurement project, as well as the qualification requirements for other suppliers and contractors.