CHEMICALS FOR THE AGRICULTURAL AND HORTICULTURAL FIELDS USED IN THE MANUFACTURE OF PLANT FERTILIZERS AND ANIMAL FEEDS, NAMELY, SULPHUR, SODA ASH, POTASH, POTASSIUM BICARBONATE, POTASSIUM SULFATE, POTASSIUM CHLORIDE, SODIUM CHLORIDE, CALCIUM PHOSPHATE, CALCIUM HYDROGEN PHOSPHATE, CALCIUM DIHYDROGEN PHOSPHATE, LIMESTONE, DIAMMONIUM PHOSPHATE, PHOSPHATE ROCK, PHOSPHORIC ACID, FLUOSILICIC ACID, GYPSUM AND SULPHURIC ACID