化肥及氮化合物的制造

This class includes: - manufacture of fertilizers: * straight or complex nitrogenous, phosphatic or potassic fertilizers * urea, crude natural phosphates and crude natural potassium salts - manufacture of associated nitrogen products: * nitric and sulphonitric acids, ammonia, ammonium chloride, ammonium carbonate, nitrites and nitrates of potassium This class also includes: - manufacture of potting soil with peat as main constituent - manufacture of potting soil mixtures of natural soil, sand, clays and minerals

This class excludes: - mining of guano, see 0891 - manufacture of agrochemical products, such as pesticides, see 2021 - operation of compost dumps, see 3821