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CHEMICAL PREPARATIONS IN THE NATURE OF FILTERING MATERIALS USED FOR THE TREATMENT OF DISCHARGE GAS AND WATER IN THE CHEMICAL, METALLURGICAL, GAS AND ELECTROPLANTING INDUSTRIES; CHEMICALS, NAMELY, MOLECULAR SIEVES; CERAMIC PARTICLES FOR USE AS FILTERING MEDIA FOR THE TREATMENT OF DISCHARGE GAS AND WATER IN THE CHEMICAL, METALLURGICAL, GAS AND ELECTROPLANTING INDUSTRIES; UNPROCESSED PLASTICS IN THE NATURE OF FILTERING MATERIALS USED IN THE PETROCHEMICAL INDUSTRY, LIGHT CHEMICAL INDUSTRY, COAL CHEMICAL, PHARMACEUTICAL, FOOD PROCESSING, REFINERY CHEMICAL AND METALLURGICAL INDUSTRIES