2391 |
Manufacture of refractory products |
2392 |
Manufacture of clay building materials |
2393 |
Manufacture of other porcelain and ceramic products |
2394 |
Manufacture of cement, lime and plaster |
2395 |
Manufacture of articles of concrete, cement and plaster |
2396 |
Cutting, shaping and finishing of stone |
2399 |
Manufacture of other non-metallic mineral products n.e.c. |