Is it legal for the general manager of state-owned enterprises to concurrently serve as a director of private enterprises?

I think you mainly want to ask state-owned enterprises and related state-owned enterprises or private enterprises.

In previous years, the chairman or general manager of a state-owned enterprise was the legal representative of a large number of subordinate enterprises or actually controlled enterprises. Because one person holds a large number of legal representatives of many affiliated enterprises, it is very inconvenient for enterprises to operate and it is easy to breed corruption. At present, SASAC has asked most state-owned enterprises not to have too many legal representatives.

However, there is no mandatory provision in this respect, and you can still work part-time. Usually approved by the superior unit or SASAC.

According to the "Several Provisions on the Integrity of Leaders of State-owned Enterprises", those who hold leadership positions in this enterprise or enterprises funded by other enterprises, institutions, social organizations and intermediaries without approval, or those who work part-time in enterprises with approval, receive wages and other income without authorization. Is a prohibited act. But if there is approval, you can do it.