ASTROLL^® is a polyester film developed by KOLON Industries, Inc. using proprietary fiber technology, as a part of the company’s efforts to bring revolutionary inventions to the textile industry and develop a future-oriented business. ASTROLL^® provides superb physical, chemical, and electrical properties and is widely used in industrial materials, including optical, electrical materials, electrical insulation, and solar devices. It also has a wide range of applications in high-value products, such as stamping foils, drawing films, rainbow films, and dry film resists. ASTROLL^® obtained ISO9002 from U.K. BSI, met the standards of U.S. FDA, German BGA, and Japan Food Hygiene Association, and was recognized by UL standards for electrical stability.