Treatment of common metals, treatment of precious metals, processing of photographic and cinematographic films, photocomposing services, photographic printing, photogravure, food processing in the nature of drying, canning, freezing, cooking, smoking, corning foodstuff, providing information in the field of food manufacturing, slaughtering of animals, leather working and fur conditioning, saddlery working, chemical textile treating, wool treating, dressmaking, embroidering, woodworking and ti...