Three-post training refers to the main person in charge, safety management personnel and special operations personnel of production and business units. According to relevant data, as of March 9, 2023, according to China's regulations, the "three posts" trainees refer to the main person in charge, safety management personnel and special operations personnel of production and business units. The "three-post personnel" country implements the access system, and can only take up their posts after passing the training and examination and obtaining the safety management qualification certificate and the operation certificate of special operations personnel, and receive regular retraining.