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Stainless steel hot-rolled black coils are made by hot rolling of slabs, and most of such coils are supplied to re-rollers. Hot-rolled no.1 coils are made of hot-rolled black coils by annealing and pickling, and they are supplied to plate cutting companies, pipe makers, and cold rolling companies. Cold-rolled coils -- made from hot-rolled coils by cold rolling, annealing, picking, and quenching and tempering -- are thinner, easy to be processed, and have a smooth surface. They are widely used in the aerospace, automobile, machinery, petrochemical, and transportation industries as well as kitchen utensils, electric appliances, construction materials, and building decorations.