Can the property manager and the real estate appraiser be affiliated separately? If not, what kind of enterprises can be linked together?

Theoretically, two completely different professional certificates can be linked separately, but from the actual situation, the policy has been tightened and the management has become more and more strict, that is, the linked certificate must be linked with the payment of social security. If two certificates are linked to different companies, it seems unlikely, because it is impossible for two companies to pay social security for you.