The manufacture, compounding, processing, packaging or treatment of the following previously prepared materials: bone, cork, feathers, cellophane, ceramics, felt, fur, glass, hair, horn, paper, pharmaceuticals, plastics, shells, iron and steel, aluminum, leather, plaster, metals, precious and/or semiprecious stones, wood, yarns, containers or novelties from paper or cardboard, natural or synthetic rubber, tobacco, textiles or textile products and perfumes.