What is the flame retardant testing standard for flame retardant plates?

The current flame retardant standards in China include GB8624-2006 "Classification of Combustion Performance of Building Materials and Products" and GB/T8625-2005 "Test Method for Flame Retardancy of Building Materials". Among them, GB8624:2006 is a test for the combustion performance of building materials and products. According to this test, it can be divided into four aspects of grades. 

The first aspect is the combustion performance of materials, which can be classified into seven levels: A1, A2, B, C, D, E, F, or AFL1, AFL2, BFL, CFL, DFL, EFL, FFL, or AL1, AL2, BL, CL, DL, EL, FL. The second aspect is the toxicity test, which is divided into three levels: T0, T1, and T2. The third aspect is the smoke concentration test, which can be divided into three levels: S1, S2, and S3. The fourth aspect is the combustion drips, which are divided into three levels: D0, D1, and D2.