Why is there a red mark outside the shell of the fire distribution box?

As we all know, the fire distribution box is an equipment used in the electrical system. Its use needs good performance. However, to protect it well is also to provide us with the power we need. The red mark painted on the outside of the fire distribution box is mainly to play a certain role in fire prevention. The use of fire retardant coatings that meet the fire resistance limit and insulation requirements is also a good way to protect the fire