23.99 — Manufacture of Other Non-metallic Mineral Products N.e.c.

This class includes: - manufacture of friction material and unmounted articles thereof with a base of mineral substances or of cellulose - manufacture of mineral insulating materials, e.g.: • slag wool, rock wool and similar mineral wools; exfoliated vermiculite, expanded clays and similar heat-insulating, sound-insulating or sound-absorbing materials - manufacture of articles of diverse mineral substances, e.g.: • worked mica and articles of mica, of peat, of graphite (other than electrical articles) - manufacture of articles of asphalt or similar material (e.g. petroleum bitumen or coal tar pitch) - manufacture of carbon and graphite fibres and products (except electrodes and electrical applications) - manufacture of artificial corundum

This class excludes: - manufacture of glass wool and non-woven glass wool products, see 23.14 - manufacture of graphite electrodes, see 27.90 - manufacture of carbon or graphite gaskets, see 28.29