What is the difference between VDE certification and TUV certification?

Name of national certification institution of German Institute of Electrical Engineers (VDE): VDE- Duncan-Prustele Testing and Certification Institute EVDE is a famous testing institution in Germany, which directly participates in the formulation of German national standards. Like UL and VDE, only VDE company can authorize the use of VDE's logo. Most people's understanding of VDE stays in the certification of electrical components. In fact, VDE testing can not only authenticate electrical components, wires and cables, plugs, etc., but also issue EMC logo and VDE-GS logo. VDE mark, which is suitable for appliances that meet the Equipment Safety Regulations (GSG), such as medical devices, electrical components and wiring accessories. The VDE-GS mark is applicable to the whole equipment according to the Equipment Safety Regulations (GSG) (it can replace the VDE mark). Actually, TUV didn't say so directly. When you go to Europe for the certification of electrical products and parts, you get the TUV logo, and the whole machine is the GS logo. It's all safety certification.