1, flame retardant properties: A2 grade materials have high flame retardant properties, that is, after the fire source withdrawal will not continue to burn, help reduce the risk of fire accidents. The A1 grade materials have higher flame retardant properties and can stop burning immediately after the fire source is evacuated.
2, smoke emissions: A2 grade material combustion smoke produced by a limited number of harmful substances in the smoke. The A1 grade material produces less smoke when burning, and the emission of harmful substances is lower.