Hemochromatosis is a genetic disorder where too much iron builds up in the body. Over time it can cause serious damage to organs. A phlebotomy procedure is done to remove blood from the body, reducing the iron load. If that can’t be done, then a process called cleation is used to remove excess iron.
https://www.mayoclinic.org/diseases-conditions/hemochromatosis/symptoms-causes/syc-20351443
The Bemer magnetic flow mat/system is used to increase blood flow in the body. That won’t change the genetics of the blood or reduce the ferritin level. So for this application, in my opinion, I’d say it would do nothing for the hemochromatosis.

Have you been diagnosed with hemochromatosis? Are you undergoing any treatments at this time?