* White helmet: usually the supervisor or Party A. ..
* Red safety helmet: usually brought by technicians, managers or Party A. ..
* Blue safety helmet: generally technical personnel.
* Yellow safety helmet: generally for ordinary workers.
These colorful helmets are mainly used to distinguish and identify the work of employees in CNNC, so as to facilitate management and safe operation. Please note that due to the changes of CNNC policies and regulations, this information may be adjusted, and the specific location and color identification of different regions and projects may be different. If you need detailed and up-to-date specifications for color identification of CNNC helmets, it is recommended to consult CNNC or the relevant person in charge directly.