Features: hollow seal Invention: Americans invented in 1866 English name: Insulated Glass The insulating glass is composed of two or more layers of ordinary flat glass. The high-strength, high-air-tight, composite adhesive is used to bond two or more pieces of glass to the sealing strip and the glass strip, and the middle is filled with dry gas, and the frame is filled with a desiccant to ensure the glass sheet. The dryness of the air. Its characteristics, due to the retention of a certain cavity, and good thermal insulation, heat insulation, sound insulation and other properties. It is mainly used for the outer glass decoration of heating, air conditioning and noise reduction facilities. Its optical properties, thermal conductivity, and sound insulation coefficient should conform to national standards. Split Case Pump,Horizontal Split Case Pump,Vertical Split Case Pump,Double Suction Split Case Pump Zhengzhou Shenlong Pump Industry CO.,Ltd , http://www.waterpump-manufacturer.com