Used refrigerators come from refrigerators scrapped in the process of consumption, and are divided into single-door refrigerators, double-door refrigerators, two-door refrigerators, three-door refrigerators, etc. according to the model, and can be further divided into different categories according to the volume. The process represented in this dataset is that after entering the dismantling workshop, the used refrigerator is decomposed using manual and mechanical (automatic crushing and sorting) and other physical processes to form dismantling products such as materials or parts. The dismantling products are composed of aluminum (3%), copper (4%), iron (50%), plastic (21%), glass (19%), and others (3%).