Raw materials, it's important to be used to production and in several production process, we often find that there are dust/scrap metal remains i.e. cutting process, grinding process, polishing process and BOM process etc. Which of these dust and scrap metal can be refine/melt down to bring metal back.
Almost all of the company’s refining consists of a metal dust, scrap materials, chemicals from the BOM process and waste water from factory that can be refine pure metal and brought back a new production