Ahead Film is a high-performance window film that thoroughly blocks heat and ultraviolet rays while remaining transparent. In addition to its outstanding heat-shielding performance through infrared (IR) blocking, it achieves a 0.0% transmission rate across the entire ultraviolet (UV) wavelength range, including UV-A. By blocking infrared rays over a wide range, everyone can feel the heat-shielding effect, suppress excessive indoor temperature increases, and reduce the operational load on air conditioning equipment. Furthermore, by preventing even 1% of ultraviolet rays from penetrating, it protects interior furnishings and flooring materials from deterioration and protects skin from UV damage. It is a window film that creates a bright and comfortable space by thoroughly blocking ultraviolet and infrared rays while allowing only visible light to pass through. The product is tested using the methods described below. The main technical characteristics evaluated include Ultraviolet Transmission, Visible Light Transmission, and TSER (Total Solar Energy Rejected). The testing procedures are based on JIS A 5759:2016 Adhesive films for glazings, the Japanese Industrial Standard for architectural window films. For TSER, the measurements follow the KS L 2016 and ISO 9050 standards.