CE is the abbreviation of French, which means "European Conformity" in English
The product meets the relevant requirements of relevant CE directives, and the CE mark is a safety conformity mark rather than a quality conformity mark.
CE certification is mandatory. There is no factory inspection requirement for CE certification of general products, but there is factory inspection requirement for CE certification of some products
European CE Certification Directive:
Low Voltage Electrical Products (LVD): 2014/35/EU
Electromagnetic Compatibility Directive (EMC): 2014/30/EU
Radio Equipment Directive (RED): 2014/53/EU
Medical Devices: 93/42/EEC
Toys Directive: 2009/48/EC
Personal Protection Equipment (PPE) Directive: 90/686/EEC
German GS certification:
GS certification is a non mandatory product safety certification in Germany. GS means "Geprufte Sicherheit" (security certification) in German.
GS certification is a voluntary certification based on the German Product Safety Law (GPGS) and tested according to the European Union unified standard EN or German industrial standard DIN. GS certification requires factory inspection and testing PAHs (polycyclic aromatic hydrocarbons)