What's the color helmet on the construction site?
And there's a lot to say about the difference in color. In general, general project manager will wear red, very smooth texture safety helmet.
The technician will wear a red hat; the safety officer is white; the electrician is wearing blue; the other type of work is red. There are different systems in different places. I just said here on.
Safety helmets at construction sites have strict grades: the helmet of a general manager is much better in quality than the average worker.