The headings in this chapter of Canada's Customs Tariff. Each one opens on the numbers it contains.
5 headings
3101.00.00.00Animal or vegetable fertilizers, whether or not mixed together or chemically treated; fertilizers produced by the mixing or chemical treatment of animal or vegetable products.
3102Mineral or chemical fertilizers, nitrogenous.
3102.10.00.00Urea, whether or not in aqueous solution
3102.2Ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate:
3105Mineral or chemical fertilizers containing two or three of the fertilizing elements nitrogen, phosphorus and potassium; other fertilizers; goods of this Chapter in tablets or similar forms or in packages of a gross weight not exceeding 10 kg.
3105.10.00.00Goods of this Chapter in tablets or similar forms or in packages of a gross weight not exceeding 10 kg
3105.20.00.00Mineral or chemical fertilizers containing the three fertilizing elements nitrogen, phosphorus and potassium