The energy-saving insulating glass is a high quality laminating glass is made with aluminum frame, sealing tape, and a reinforcing third piece of glass. The aluminum frame can be filled with dry air or inert gas (argon), which has a poor conductivity of heat, and by combining with NF membrane, Dresden insulating glass can effectively reduce the U value in thermal conductivity to achieve the best thermal insulation, producing a cool environment and anti-condensation.