CHEMICALS USED TO PRESERVE THE FRESHNESS AND QUALITY OF FOOD; CHEMICALS FOR USE IN THE METAL, CERAMICS, PLASTICS, MINERAL OIL, NATURAL GAS, GLASS, FOOD, PAPER, RUBBER, WATER TREATMENT, ELECTRICAL AND ELECTRONICS INDUSTRIES, NAMELY, FLUOROCARBON CHLORIDES, REFRIGERANTS, ADSORPTION AGENTS AND CATALYSTS; CHEMICALS FOR USE IN OPTICAL IMAGERY, NAMELY, BARIUM CARBONATE, BARIUM NITRATE AND STRONTIUM CARBONATE; SOLDERING CHEMICALS AND FLUXES; MINERAL RAW MATERIALS FOR USE IN THE PRODUCTION OF GLASS A...