[Patgaepx]

"Can anyone refer me to a scientifically credible information of the theory or products recommended ?"

No. Its just a money making scheme by some dubious people to scam gullible people.

Edit:
They have invented a problem so they can sell a solution, I checked it out and they link to studies done by themselves to give credibility, they even invented a new unit for dirty electricity the GS (Graham Stetzer) ie the person selling these things . Complete rubbish.