... to GB/T8484-2008), the result shows GRP of thickness of 50mm, K is 2.0W/m2K.Fire ... -305G), refer to GB/T2680-1994, GRP of thickness of 50mm, the transmittance is up to 85%. ... 304S), refer to GB/T50121-2005, GRP of thickness of 50mm, sound isolation is 28dB.Wonderful mechanical performance ... co2, co and dust, exclusive of nitride, sulfide, halogen or heavy metal. The product of combustion is low in ...