C2717 Indestructible Insulation Materials

The first to be tested was the inorganic heat insulation material.

The intrinsic heat insulation material referred to materials that could block the flow of heat, also known as heat insulation materials. The traditional heat insulation materials, such as glass fibers, asbestos, asbestos, silica salt, etc., were a new type of heat insulation material, like gaseous rubber sheets.

And at this time