What are the details (including aspects) of safety warning signs on construction sites?

The first point is the construction site safety management system;

Second, there are warning signs hanging into the construction site. You should wear safety helmets, exit warning signs, chemical reaction warning signs (individual construction sites), safety operation procedures of mortar mixers, fire signs, beware of extrusion injuries, beware of openings, and pay attention to high temperature, electric shock, gas valves, etc. when hoisting. Hang different warning signs according to the nature of the construction site!