... EuropeAsiapolycarbonate sheet Applications:1. Roofing light sheet and sunshade for office. building ,departmente,hotel,stadium,school ,amusement center ... ,hospital,etc.2. skylight,lighting for corridors ,balcony,passages and subway entries ,walkways.3. ... 1.Never contact the surface with undried cement or acid or alkali material. 2.Never contact the organic solution ...