+49 (0) 69274015234 (German / English) 
+86 182 ‎1003 0243 (Chinese) 
+49 160 606 806 8 (Russian)
info@dreherdt.com
Germany: 
Schopenhauer Str. 16,
55743 Idar-Oberstein, Germany

China: 
Guang Qu Lu 36,
100021 Beijing, China