1, Use reverse-static tiny embossed patterns in intervals on both sides of the polycarbonate sheet with corrugate, designed to enhance the tenacity and anti-static function of the sheet. 2, The combination of the embossed and smooth surface have a special effect.. The rays through the embossed surface directly when it’ s the strongest in the daytime, the light transmission is 50% , it makes the sunshine soft. The rays slanted through the smooth surface when it’ s weak, the light transmission is 90% . It makes the whole daytime light soft.