It is very suitable for the use requirements of curtain wall industry. Compared with the commonly used mechanical connection, it will not produce stress concentration and has better apparent quality and service life; It can also bond different kinds of materials to dissipate the deformation and stress caused by different coefficient of thermal expansion; Moreover, it can provide isolation protection for the bonding surface and prevent the occurrence of chemical or potential corrosion. Compared with silica gel and other adhesives commonly used in the construction industry, it not only provides similar mechanical properties, but also has the inherent advantages of simple construction, convenient operation and rapid adhesion of pressure-sensitive adhesive, which is more in line with the requirements of mass construction. Let's make a brief introduction to the design and use of VHb in curtain wall application.