There is a high probability of fire in public places, so flame retardant measures are essential. However, due to regional and cultural differences, the varieties and specifications of flame retardant products in different places are also diverse. 1n view of this, after several expert seminars, it was determined that the flame retardant properties of flame retardant products were tested according to the following classification.
1. Flame retardant building products: for building materials of the same material and structure, if the thickest and thinnest materials can meet the requirements of a certain level at the same time, it can be considered that the materials with the thickness between them also meet the requirements of the level(Flame retardant floor materials: for the same material, if the thickest and thinnest flame retardant floor materials can meet the requirements of a certain level at the same time, the flame retardant floor materials with the thickness between them can also meet the requirements of this level.)