... glazing: 1.ISO9001:2002,RoHS of SGS 2.100%bayer with uv protection 10yrs warranty 3.thickness:1.4-15mmclear polycarbonate glazing:Material ... : ISO9001:2002, 9SQuality:100% virgin bayer material, 50 micron UV layer,10 years warranty,approved by ISO9001: 2002,SGS,RoHS ... weight of glass of the same thickness 5) Ultraviolet resistance: with UV protective layer 6) Flame resistance: rated class B1 7) Sound ...