This U.S. industry comprises establishments primarily engaged in manufacturing inorganic dyes and pigments. Cross-References. Establishments primarily engaged in-- ? Manufacturing wood byproducts used as dyeing materials--are classified in U.S. Industry 325191, Gum and Wood Chemical Manufacturing; ? Manufacturing organic synthetic dyes and pigments--are classified in U.S. Industry 325132, Synthetic Organic Dye and Pigment Manufacturing; ? Manufacturing carbon, bone, and lamp black--are classified in U.S. Industry 325182, Carbon Black Manufacturing; and ? Manufacturing natural food colorings--are classified in Industry 311930, Flavoring Syrup and Concentrate Manufacturing.