It is the combination by 2 or more than 2 pieces of glass. There is fixed interval kept between glasses. The dry air is inside the space of intervals, and seal by wrapping seal material around glasses. The interval material adopts special strip imported from aboard. The strip contains the material combined by desiccant, corrugated aluminum, and butylene rubber. It can ensure the inside of Insulating Glass will not have fog, dew, and mold.