Not bad.

The main raw materials of Fullus rubber and plastic insulation materials are made of NBR and PVC foam. Fullus insulation materials have no fiber dust, no formaldehyde, no chlorofluorocarbons and other substances that damage the ozone layer, and can be used at temperatures from -50 degrees Celsius to 105 degrees Celsius. Fullus insulation materials have low thermal conductivity, excellent resistance to water vapor penetration, and good fire protection properties in line with the national standard GB8624-1997.

The Armaflex trademark is owned by ARMACELL, and its English trademark is Armaflex. It is a highly elastic closed-cell foam insulation material based on nitrile rubber invented by Armstrong Insulation Materials Division, the predecessor of Armacell Corporation, in 1953. This was a huge technological breakthrough, and Fullers later became the world's leading brand of flexible pipe insulation materials. Fullus has no fiber dust, no formaldehyde, no chlorofluorocarbons and other working fluids that damage the ozone layer. It is widely used in the insulation of hot and cold water pipes and air conditioning systems in civil and industrial buildings.