Many shielding products must or should be earthed (grounded), so that the LF shielding functions at all, and therefore no undesirable RF side effects take place!
"Earthing" is a new trend from the US, connecting the body to the earth during sleep or at permanent stay places at home.
For more information see literature of Clinton Ober, Stephen Sinatra or Martin Zucker.
This "Earthing" also requires high-quality grounding accessories as we offer here.
The basis for these grounding measures are these professional grounding components
Worldwide, there are countless rules and regulations which should be followed.
For notes on many European countries, see "Grounding Instruction FPA".