GROWEL AL BLACK Description Growel Al Black product is newly developed for the immersion process. It gives an excellent black finish on aluminum & aluminum alloys. Characteristics: Replacement of Costly black anodizing process. Jet black deposit It's an easy-to-use finish that requires no special equipment or procedures. Rack and Barrel process are applicable. RoHS compliance APPLICATIONS : Room-temperature immersion and a swab-on solution process. For Small machine parts, Grommets, screws, and other Hardware. get a quote