| http://www.w3.org/ns/prov#value | - As the compressible material having a cushioning property, one kind of material or a composite material consisting of two or more kinds of materials selected from a group consisting of a metallic wire mesh, an intumescent mat formed by ceramic fiber and vermiculite, and non-intumescent mat containing ceramic fibers as a major component, but free from vermiculite is preferably used.
|
