ASTM E283/E283M-19 (air infiltration test chamber pressures)

Air leakage through the building joints is usually one of the main reasons why airtightness targets are not achieved.

PU foam is self-adhesive and self-hardening sealing materials that are often used for door and window installation and filling other joints and gaps in the building. So its airtightness is very important.

GNS is the leading PU foam manufacturer in Asia, the advanced research and developing technology have support us standing more and more market sales.

Also, GNS PU Foam have passed the the standard of ASTM E283/E283M-19 (air infiltration test chamber pressures), it is a guarantee for the building airtightness when using GNS PU Foam.