How come all trade fairs and Zhaopin recruitment are intermediaries?

Because the agent gives them money. The information posted on these recruitment websites must be checked with official website of their company. Generally speaking, the recruitment activities of formal enterprises are handled by the human resources department of the unit where they work, and the human resources department will release recruitment plans through multiple channels at the same time. If a unit explodes itself and doesn't even have its own corporate website, then the unit is almost a leather bag company at most, if it is not a professional fraud gang.