Polygal Plastics Industries Ltd offers Triple-Clip Panel Glazing System. Polygal Plastics Industries Ltd is an ISO 9001:2000 and ISO 14001 awarded company. Polygal Plastics Industries Ltd offers various types of polycarbonate and polypropylene structured sheets and advanced glazing systems. Triple-Clip Panel Glazing System is suited for Covering of medium span, vertical walls, D.I.Y. Polygal Sheets feature a UV protective layer to protect against yellowing, and are covered by a 10 Year Warranty against breakage and yellowing etc.