This Sub-class includes the manufacture of clay products not elsewhere classified.
•refractory mortars and/or concretes manufacturing •refractory ceramic goods: heat-insulating ceramic goods of siliceous fossil meals and/or blocks etc, retorts, crucibles, muffles, nozzles, tubes, etc. manufacturing •non-refractory ceramic flags and/or paving manufacturing •ceramic sanitary fixtures manufacturing •refractory articles containing magnesite, dolomite or chromite manufacturing
•manufacture of artificial stone (e.g. cultured marble), see 22219