2. Lecture content

Mainly talk about some fire protection knowledge, aiming at saving oneself and escaping. Rationally speaking, there will be words in the lecture that emphasize the necessity of having fire-fighting products at home, but I don't think it is a sales promotion, because there is still a fire extinguisher at home. If you have it at home, of course, you don't have to buy it, and you won't force it.

3. Three conditions of fire.

Fire triangle is the abbreviation of combustion improver, combustible and ignition source, also known as the three elements of fire. Without any of these three conditions, fire combustion can not occur and maintain, so the fire triangle is a necessary condition for fire combustion.