Can it be transferred back from Yanshan Petrochemical Company?

Sinopec is a large central enterprise. In recent years, central enterprises have recruited employees through school recruitment, and there are few social recruitment. Under normal circumstances, if Sinopec wants to come back as a regular employee after leaving the company, it can only take the form of social recruitment, and there are not many such large central enterprises, which have restrictions on age and whether there are suitable positions. Therefore, after Sinopec resigns, the possibility of going back to become an employee is almost zero.