... :2008,CNAS,SGS 2. UV coating with 10 years warranty 3.100% virgin makrolon resin Hongyu polycarbonate hollow sheet has good ... :2100mm,1220mm2)Length:no limited3)Thickness:3-layer:10/12/16/18mm, 5-layer:20/25mm4)Color:transparent,lake blue,royalblue,green,opal,bronze,red ... system and so on X-Structure Polycarbonate triple-wall sheet,Blue color