Plastic film on car windows can reduce fuel consumption by up to 0.4 Km/L (1.0 mile per gallon)

摘要

The revolutionary film is 3M Co's new 'Solar Reflective Film.' This film consists of several hundred precise layers of ultra-thin clear polymer, each with with it own light refraction qualitie. The layers of the film are combined in a way that allows them to transmit visible light wavelengths and reflect heat-producing infrared wavelengths.