Chemicals for use in industry, science and photography; chemical preparations for use in agriculture, horticulture and forestry, except fungicides, herbicides, insecticides and parasiticides; metal tempering preparations for use in metalworking or soldering; tanning agents for use in the manufacture of leather; chemical oxidants, namely, electro-chemically activated, mixed chemical oxidant solutions derived from the electrolysis of salts of varying kinds, except food supplements; chemical pre...