... ultraviolet ray approve to 99.9% effectively. polycarbonate corrugated sheet specificationLengthcan be any length by customer.ColourClear,bronze ... , simple construction and fine treatmentApplications of UV-PC corrugated sheet • Roofing/wall of agricultrure greenhouse,garden,plant ... tc.Notice when delivery, stockpile,installation• Keep PC sheets away from wet cement surface or any alkaline/acid base ...