Why not sign the recruitment contract of central enterprises with the company name?

Because the contract for the recruitment of central enterprises is a special employment agreement. It is different from the recruitment contract of state-owned enterprises and the labor contract of general enterprises. Under normal circumstances, central enterprises will issue employment agreements to employees after the recruitment, which is an agreement between central enterprises and employees, including jobs, wages, benefits, working hours, insurance, resignation and so on. The employment agreement of central enterprises may not contain the company name signature, but its legality and validity will not be affected.