Energy-saving is a global trend. The usable energy becomes less and less on Earth. It is a great task to reduce the energy loss or consumption in the modern sci-tech development. The ordinary aluminum alloy door and window, single glass door and window have been deserted because of the large heat-conducting coefficient, quick heat emission. Bridge-cut aluminum alloy energy-saving door and window, energy-saving curtain wall which have been developed and produced by our company in the close steps to the world’s fashion adopt the patent design double-layer bridge-cut and energy-saving aluminum alloy section material construction with the connect node. It coordinates with the hollow heat-isolation glass, the imported and high grade parts from Europe. It not only is equipped with the humane operation and control performances with the high intensity, high safety, but also have the sound heat and sound isolation, heat insulation, energy-saving efficacies. It gets the elegant and pleasing outline, rational and economic structure. At present, we produce the medium and high grades of the energy-saving door and window with the widest use range.