Fertilizers and Nitrogen Compounds Manufacturers

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