Synthetic organic tanning substances; inorganic tanning substances; tanning preparations; enzymatic preparations for pre-tanning

CPC v2.1 class (Synthetic organic tanning substances; inorganic tanning substances; tanning preparations; enzymatic preparations for pre-tanning) within 'Tanning or dyeing extracts; tannins and their derivatives; colouring matter n.e.c.'. UN Central Product Classification grouping of related products at this level.