They probably don't know all of them, if the Party knows what it's about.
In the old Soviet system, you had people who were openly members of the Party, political officers placed in your organization. But you also had KGB agents placed in your organization that you didn't know about, because their job was to keep an eye on you.
> could be agents for the communist party operating without the knowledge of the regular management
Isn't that worse? Management being unable to make commitments, because they don't control their firms, the Party does, is the central problem with Chinese companies.