Pure silver mirror reflective film, good barrier property, can effectively reduce a small amount of heat loss, and can save energy by 10-20%. Sterling silver and PET materials are freeze-thaw resistant, formaldehyde-free, non-toxic and tasteless, environmentally friendly and safe.Good shock absorption, impact resistance, heat sealing; non-toxic, odorless, moisture-proof, corrosion-resistant; good transparency, high reflectivity, strong alkali resistance, long life, more uniform heat conduction.