Here, 'Steel scrap, sorted' refers to steel products and steel scrap that have lost their original utilitarian value, or that have not lost their utilitarian value but have been discarded or obsoleted, which have been classified, impurities removed, and pre-treated by manual or mechanical methods to form relatively pure steel resources. This type of scrap steel can be directly used as iron feedstock in blast furnaces, converters, or electric furnaces, achieving recycling and utilisation.