 
| Class | Class Name | 
|---|---|
| 31 | bulbs for horticultural use | 
| 31 | bushes | 
| 31 | by-products of the processing of cereals, for animal consumption | 
| 31 | cannabis plants | 
| 31 | cannabis, unprocessed | 
| 31 | cattle cake | 
| 31 | cattle food | 
| 31 | cattle salt | 
| 31 | cereal seeds | 
| 31 | cereal seeds, unprocessed | 
| 31 | chestnuts, fresh | 
| 31 | chicory, fresh | 
| 31 | chicory roots | 
| 31 | Christmas trees | 
| 31 | citrus fruit, fresh | 
| 31 | climbing plants | 
| 31 | cocoa beans, raw | 
| 31 | coconut shell | 
| 31 | coconuts | 
| 31 | cocoons for egg production | 
| 31 | cola nuts | 
| 31 | copra | 
| 31 | crabs [live] | 
| 31 | crayfish, live | 
| 31 | creepers | 
| 31 | crustaceans, live | 
| 31 | cucumbers, fresh | 
| 31 | cuttle bone for birds | 
| 31 | cuttlefish bones | 
| 31 | dark brown sea algae, fresh | 
| 31 | distillery waste for animal consumption | 
| 31 | dog and cat food | 
| 31 | dog biscuits | 
| 31 | dog chews | 
| 31 | dog treats | 
| 31 | draff | 
| 31 | dried flower arrangements | 
| 31 | dried flowers | 
| 31 | dried flowers for decoration | 
| 31 | dried plants | 
| 31 | dried plants for decoration | 
| 31 | dried rose petals | 
| 31 | dried roses | 
| 31 | dried roses buds | 
| 31 | edible chews for animals | 
| 31 | edible chews for animals and pets | 
| 31 | edible flaxseed, unprocessed | 
| 31 | edible flowers, fresh | 
| 31 | edible insects, live | 
| 31 | edible linseed, unprocessed |