… and other ceramic goods of siliceous fossil meals (for example, kieselguhr, tripolite or diatomite) or of similar …
Explanatory notes
… very light weight, and their porous structure makes them excellent heat-insulators for use in building, for the … insulators or conductors, have a low coefficient of thermal expansion, be porous or dense, resist the corrosive effects … and other ceramic goods of siliceous fossil meals (for example, kieselguhr, tripolite or diatomite) or of similar …