- Abrasive powders
- ABS polymers
- Activated carbon
- Agglomerates
- Almonds
- Almonds & walnuts
- ALP cereal
- Aluminum acetate
- Aluminum granules
- Aluminum oxide
- Aluminum castings
- Aluminum sulfate
- Aluminum-silicate
- Amino benzo acid
- Ammonium nitrate
- Ammonium pellets
- Ammonium phosphate
- Ammonium sulphate
- Ammonium-bromide
- Ammonium sulphate pellets
- Ammonia nitrate
- Animal feed pellets
- Animal feedstuff
- Animal food
- Animal product
- Animal waste
- Anthracite
- Apples
- Asbestos flour
- Ash and slag
- Aspirin powder