I would expect industrial cleaners to have some large vat of hot de-fatting solution, followed by a detergent stage, followed by a large vat of bleaching solut

I would expect industrial cleaners to have some large vat of hot de-fatting solution, followed by a detergent stage, followed by a large vat of bleaching solution if appropriate, followed by some sort of rinse and possibly a pressing stage, if t'were paid for as an add-on.