1. Primarily used for coloring inks, paints, plastics, rubber, and stationery items. 2. Suitable for various solvent-based paints, plastic inks, gravure inks, and quick-dry inks. 3. Stable β-type greenish blue with excellent dispersion and high hiding power, used in alkyd resins. 4. Used for coloring inks, paints, plastics, rubber, pigment paste, and synthetic fiber stock. 5. Unstable α-type redish blue with strong coloring power, suitable for latex and water-based coatings. 6. Used to produce peacock blue inks, for coloring alkyd paints, and also for coloring plastic and stationery items. 7. Used for coloring paints, spray paints, inks, plastics, and rubber. 8. Mainly used for coloring inks, printing inks, paints, watercolor paints, oil paints, and fabric printing inks, as well as rubber and plastic products. 9. A major variety of blue pigment, primarily used as a coloring agent in adhesives. The particle size for actual application is generally 0.01-0.1μm, and must undergo a micro-fining process. The aim of pigment processing is to alter crystal structure and reduce particle size, with methods including acid treatment and salt grinding. Mainly used in the ink industry to produce peacock blue inks, which is a major variety in four-color plate inks. In the paint industry, it is used for coloring alkyd magnet paint, amino baking finish, nitrocellulose paint, and transparent paint. Also used for coloring plastics, rubber, stationery items, paint cloths, and fabric printing inks.