Marc, Yuhang, Michael, Aso

After the continuous cleaning over the weekend, we inspected the mirror surface.

The stains are still there.
However, we have an impression that they became fainter.
Although it is very difficult to tell, here are photos before and after.

Before the weekend cleaning

After the weekend cleaning

We are preparing to install heater to use hot water for cleaning, hoping to remove the stains faster.

In the meantime, we are continuing the cleaning process with cold water.