OPRA sales offices

OPRA, Amsterdam (NL)

World Trade Center (WTC)
Strawinskylaan 643
1077 XX Amsterdam
The Netherlands

(C tower, level 6)

OPRA, Hengelo (NL) 

OPRA Optimal Radial Turbine B.V.
Opaalstraat 60
7554 TS Hengelo
The Netherlands

Phone: +31 (0)74 245 2121
Fax: +31 (0)74 245 2120