การผลิตวัสดุก่อสร้างที่วัตถุดิบหลักทำจากดิน

This class includes:
- manufacture of non-refractory ceramic hearth or wall tiles, mosaic cubes etc.
- manufacture of non-refractory ceramic flags and paving
- manufacture of structural non-refractory clay building materials:
* manufacture of ceramic bric

This class excludes:
- manufacture of artificial stone (e.g. cultured marble), see 2220
- manufacture of refractory ceramic products, see 2391