ECOBLUE window film is an innovative film with high heat rejection efficiency. ECOBLUE is made from multilayer crystal clear, flexible, tough and durable polyester layers with multilayers nano ceramic molecular coating. Varied by means of multi-Layer Sputtering or Multi-Layer inorganic Coating technolgoy, various special ceramic nanoparticles layers up to 9 layers of silver and synthesised ceramic are coated on PET film. ECOBLUE has special property of blocking mainly infrared heat and UV rays in sunlight from passing through the film layer (Spectrally Selective Infrared Filtering). However, ECOBLUE film allows visible light to pass through as much as 70%, giving clear vision and low reflection. ECOBLUE does not interferewith communication signal interference such as GPS or mobile phones. Hence, ECOBLUE window film is the ultimate heat shield and suitable for use with residential and automotive glass.