The right picture is made into a Insulated glass:
Thermal insulation Low-e glass(Low-Emissivity glass) is one of the coated glass products with the vacuum sputtering process coats glass surfaces with several layers of different materials on the glass surface, compared with ordinary glass and traditional coated glass for building . This product offers the high transparency, low reflectivity, good thermal insulating and energy-saving properties required of modern architectural glass and green building design.