1, recommended by the unit to the government procurement supervision department;
2. Introduce yourself. Generally, the website of experts' registration and warehousing will be opened on the government procurement website. You can register the information and then contact the manager to see how they reply.
Government procurement also requires strict assessment of bid evaluation experts, and some experts in some places have been jailed for cheating.
In fact, many real experts are outside the expert database. Say a few more words ... ha ha laugh