The DIN-Institute is in Berlin. It published most standards also in English language. VDE - Committee of German Electrical Engineers. They do approvals according to electronical VDE-standards as well as inspections and consulting projects. It is difficult to decide at what point in time they will rely just on the CE-label in the future.
T V is the assigned inspection authority for mechanical standards and safety rules.
All technical products including cars, machines, and equipment are inspected by the T V in Germany. The T V has uncountable technical branch offices, regional branch offices, and also industry related divisions. The T V is not only an inspection and approval institution but also does a lot of technical consulting.