Insulating glass was invented by Americans in 1865. It is a new building material with good heat insulation, sound insulation, beauty and applicability, and can reduce the dead weight of buildings. It is made of two (or three) pieces of glass, using high strength and high air tightness composite binder, and bonding the glass sheet with the aluminum alloy frame containing desiccant to form a high-performance sound insulation glass. Hollow glass has various superior properties compared to ordinary double-layer glass, and has therefore been recognized by various countries. Hollow glass is a glass product that effectively supports and evenly separates two or more glass sheets, and seals them around the edges, creating a dry gas space between the glass layers. Its main materials are glass, aluminum spacer strips, corner plugs, butyl rubber, polysulfide rubber, and desiccants.