23.650Level 523.65Manufacture of fibre cement23.65001Manufacture of building materials of vegetable substances (wood wool, straw, reeds, rushes) agglomerated with an inorganic binder (cement, plaster, etc.)23.65002Manufacture of asbestos-cement, cellulose fibre-cement or the like: corrugated sheets or other panels, tiles, tubes, pipes, reservoirs, troughs, basins, sinks, jars, etc.