... coloring, stamping materials, leather dyeing, plastic coating, printing ink, stationery, ink, metal, paint, eyeglasses, packaging paper, aluminum foil, vacuum ... specialty coatings5, ballpoint pen and a variety of stationery ink dye6, the plastic surface staining (such as vacuum ... shoe polish stain9, metal complex dyes for solvent-based inks10, a printing ink used for other paper or metal surface with ...