Good Day!
We are very sorry about the problem of stains.
After thoroughly checking the daily production report and interviewing the operators on duty,
there was no found of stains during the process of slitting.
It is very likely that the stains were caused by the dense moisture at the time of processing and packing.
Because the daily production report shows heavy rain for several days (Typhoon).
We will avoid processing the material during the Typhoon period.
We are very willing to compensate for the loss.
Sorry for the inconvenience.