1.Light transmisson, 2.uv-protection, weather ability, 3.fire-retardancy, impactresistance polycarbonate 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. Advertising lamp boxes ,sign board .4. Bank ATMS. Bullet resistabce ...