What is the Standard Test for Flame - Retardant Sheets?

The current flame retardant standards in China include GB8624-2006 "Classification of Burning 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 on the burning performance of building materials and products. According to this test, it can be divided into four aspects of grades. 

The first is the burning 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 is the toxicity test, which is divided into three levels: T0, T1, T2! 

The third is the smoke concentration test, which can be divided into three levels: S1, S2, S3! 

The fourth is the burning drips, which are divided into three levels: D0, D1, D2!