Surface finish & Characteristics and application           NO.1          Hot-rolled surface,annealed and pickled,can be used as cold-rolling material,industial tanks and chem ical devices.           NO.2D            Cold-rolled, annealed and pickled without skinpassing the dull products can be used as automobile parts, building materrials and pipings.           NO.2B           The surface brightness and flatness of NO.2B is better than NO.2D. Then through a special surface treament to improve its mechamical properties, N02B could nearly satisfy comprehensive uses.           NO.3      Polished with abrasive belt of grit #100-#120,have better brightness with discontin uous coarse stria, used as inner and external ornaments for building, electrical applianc es and kitch en utensils etc.           NO.4      Polished with abrasive belt of grit #150-#180, have better brightness with discontinuous coarse stria, but thinner than NO.3, are used as bathtud building抯 inner and external ornaments electrical appliances, kitchen utensils and food processing equipment etc.           #320      Polished with abrasive belt of grit #320, have better brightness with discontinuous coarse stria, but thinner NO.3, are used as bathtub building抯 inner and external ornaments electrical appliances, kitchen utensils and food lprocessing equipment etc.           HL      Polished with abrasive belt of grit #150-320 on the No.4 finish and has continuous streaks, mainly used as build ing抯 ornaments, elevators, door of building, frontal plate etc.           BA      Cold rolled, bright annealed and skin-passed, the product has excellent brightness and good reflexivi ty like mirror, used for lectrical appliances, mirror, kitch en apparatus, ornament materials etc.