iFilm is a self-developed benchmark product of electricity-free cooling specially developed for glass surface by i2Cool. The material applies the principle of passive radiative cooling technology. Using outer space as the source of cooling, through efficient solar reflection and mid infrared heat emission, it effectively reduces the indoor temperature while ensuring the building's aesthetic and lighting viewing needs, achieving the effect of electricity-free cooling and saving air-conditioning energy consumption.

iFilm is composed of a blend of organic polymer and inorganic functional components that work together to reflect a large portion of the sun's rays. When applied to architectural glass materials, such as glass curtain walls or windows, the film dissipates heat energy as mid-infrared thermal radiation into space, effectively lowering indoor temperatures and decreasing energy consumption required for air conditioning, without the need for additional energy or refrigerants.