10-year guarantee ,bayer materials,good quality ,good offer polycarbonate sheet manufacturerFeatures:1) Light transmission: up to 88%2) Impact resistance: ... ) available in 4mm,5mm,6mm,7.5mm,8mm,10mm,12mm,14mm,16mm ,18mm. Also with twin-wall and triple-wall about ... 12mm,14mm,16mm,18mm4) Color: clear, lake blue, green, blue, opal, bronze ...