GS stands for "Geprüfte Sicherheit" (Tested Safety) and is an established certification mark in Germany. It is issued by independent testing bodies, such as TÜV, VDE, or other accredited institutes.
The GS mark certifies that a product meets the requirements of the German Product Safety Act (ProdSG) and poses no risks to the safety or health of users. It is a voluntary but widely recognized quality seal that inspires consumer trust, especially in Europe.