The lowest U value of vacuum glass is 0.51W(m2·K), which can be used with various profiles to meet the requirements of U value and photothermal parameters of passive house in severe cold and cold areas.

The sound insulation capacity of hollow composite vacuum glass can reach 42dB, and the sound insulation performance can reach grade 5.

There is no gas between the two pieces of vacuum glass, which eliminates the possibility of internal condensation.

It can keep its excellent performance (U value) unchanged in all positions of buildings, including facade, slope and roof; When it is used in plateau area, it will not appear crack phenomenon.

All the materials used are inorganic materials, which will not aging in the sun. The application of getter can ensure that the vacuum degree is constant within 25 years.