Vacuum glass is between two pieces of glass with 0.12-0.15mm tiny support interval.It is surrounded by low melting point melting inorganic material, and through the "exhaust" after sealing, forming a vacuum layer pressure less than 0.1Pa.Without gas conduction heat transmittance and convection heat transmittance,vacuum glass has super insulation performance and reduces the temperature of the condensation.While the vacuum layer can effectively block the transmission of sound, it has excellent sound insulation performance.