1.Technical data Sizes can be customized,from diameter 11-40mm Material aluminum flake >99.7 Pourcent purity 1-6 color offset printing Orifice can be sealed orifice,open orifice,elongated/extended nozzle Internal lacquer antioxidize material, bottom latex Ultraviolet sterilization 2. External surface: Natural aluminum color/silver itself Symmetrical inner coating Offset printing 3. Usage: cosmetic packaging, hair dye packaging, hair color pa