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

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

The first aspect is the burning performance of the 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 burning drips, which are divided into three levels: D0, D1, and D2.