1. Government procurement projects: the government needs to carry out public tendering when purchasing goods or services to ensure the principles of justice, fairness and openness.
2. Construction projects: construction projects involving public **** interests and safety need to be open tender, such as large public **** buildings, bridges, highways and so on.
3. Energy and mineral resources development projects: involving the development of important national resources, the need for public tenders to ensure that the utilization of resources is fair and just.
4. Finance, insurance, securities and other projects: these projects involve important economic interests such as funds and securities, and require public bidding.
The specific types of projects and criteria for which tenders are required may vary from country to country, region to region and industry to industry, and the specifics require reference to relevant laws, regulations and provisions.
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