... GB/T8484-2008), the result shows GRP of thickness of 50mm, K is 2.0W/m2K.Fire resistance: class B ... ), refer to GB/T2680-1994, GRP of thickness of 50mm, the transmittance is up to 85%. In sunny days, ... ), refer to GB/T50121-2005, GRP of thickness of 50mm, sound isolation is 28dB.Wonderful mechanical performance, which is ... in winter.Light in weight: GRP of thickness of 50mm, it is 6.8Kg/m2 in weight.It is ...