对外不再存在教授、副教授资格证书，只有明确聘期的教授、副教授聘书。

The appointed professor or associate professors can enjoy treatment concerned only in the period of appointment.

审批后，由沈阳铸造研究所与受聘者签订聘任合同，颁发聘书，每届聘期5年。

After approval, Shenyang Research Institute of Foundry (SRIF) will sign the employment contract with the employee, providing the letter of appointment. The duration of employment is 5 years.