I am tableware disinfection companies have a lot of dishes and utensils with metal friction produce a lot of black mark, and rust stains. How to remove the search
It is moldy, soaking with biological cleaner first again after cleaning, cleaning with high temperature steam disinfection after drying. Next time when cleaning utensils and other metal tableware wash separately.
You use disinfection without drying function, or a heating device is poorer, to reach the required temperature drying. Suggest you add before disinfection cabinet, the residual moisture with absorbing sponge blot as much as possible.
That isn't mold, it is the trace of metal friction, have special remover.