With the continuous improvement of human awareness of sustainable development and building energy conservation, Low-E glass has been rapidly promoted and popularized due to its excellent energy-saving performance. The scope of application has rapidly expanded from high-end public buildings to ordinary civil buildings

The online Low-E glass film layer is hard, with good firmness and good wear resistance. It can be stored, processed and cut as normal glass, also can be tempered and bent. It is usuallly used as single piece or laminated, insluated glass.

Off-line Low-E glass, some films are soft, the wear resistance and firmness are not very good. It is also sensitive to humidity, the storage period is short, and the production cost is high. Some offline membranes cannot be used singly when exposed to air. It must be processed into composite products such as insulated and laminated.