Safety warning signs should be set at the corresponding hazardous locations or nearest locations that are most easily observed. The safety warning sign should be set in a bright and well-lit environment. If the light is dark near the position where the sign should be set, the auxiliary light source should be added.
The safety warning sign should be firmly fixed on the support object, and there should be no tilting, curling, swinging and other phenomena, and the height should be consistent with the height of the human eye.