SULPHATES; CARBONATES; SODIUM BICARBONATE; COPPER SULPHATE; FERROUS SULFATES AGAINST YELLOWING OF PLANT LEAVES; MANGANESE SULPHATE; ZINC SULPHATE; SPECIALTY CHEMICALS, NAMELY, CHEMICAL ADDITIVES FOR GENERAL INDUSTRIAL USE IN THE MANUFACTURE OF A WIDE VARIETY OF GOODS; WATER PURIFYING CHEMICALS FOR SWIMMING POOLS; CHEMICAL PREPARATIONS FOR USE IN AGRICULTURE, HORTICULTURE AND FORESTRY, NAMELY, CHEMICAL PREPARATIONS FOR THE TREATMENT OF SEEDS; ZINC OXIDE; MANGANOUS OXIDE; WASTE WATER TREATMENT ...