"waste textiles in municipal solid waste" refers to discarded clothing, bed linens, curtains, carpets, and other textile products generated during residents' daily life and consumption. After being mixed into municipal solid waste, these textiles lose their original functionality or, although not entirely losing utility value, are abandoned. Through collection, sorting, cleaning, and fiber recovery, such waste textiles can be processed into regenerated fiber raw materials for manufacturing recycled textiles, thermal insulation materials, fillers, or fuel, thereby achieving resource utilization.