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tensile high-strength steel sheet excellent in collision characteristics have a maximum strength 780MPa, high-strength hot-dip galvanized steel sheet, and , high strength galvannealed steel sheet and method of manufacturing the same
tensile high-strength steel sheet excellent in collision characteristics have a maximum strength 780MPa, high-strength hot-dip galvanized steel sheet, and , high strength galvannealed steel sheet and method of manufacturing the same