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de-N Dieser Benutzer spricht Deutsch als Muttersprache.
en-3 This user has advanced knowledge of English.
This user is an administrator on the German Wikipedia. (verify·CA)
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Hallo, my name is Kai and I am living in middle of germany. I am active in Wikipedia since 2004 and I was six years member of the german language arbcom. Now I am administrator of the german language wikipedia since 2022. My activity is primary on my homewiki and crosswiki vandalism fighting.

In my profession I am chemist with a doctoral degree. For further Information see my userpage at my homewiki there in german language.