From Wiesbaden:
Leave the A66 at exit Wiesbaden-Nordenstadt and continue on Stolberger Strasse in direction Nordenstadt. Pass the bridge and then turn left into Borsigstrasse.

From Frankfurt:
Leave the A66 at exit Wiesbaden-Nordenstadt and continue straight on, crossing Stolberger Strasse, into Borsigstrasse.

By train:
From Frankfurt/Airport take the city train S8 to Wiesbaden Hauptbahnhof (central station). Taxis are available in front of the station.

Or please use the interactive route planner:

17.11.2011 - STI continues to invest in international training of its staff
Matthias Haxter, Manager - Training, is now the fourth senior staff member at STI GmbH, to have attained the internationally coveted and distinguished status of "Aviation Security Professional Manager" from ICAO (International Civil Aviation Organisation). ... more

16.11.2011 - STI opens new air cargo control center in Kelsterbach
Since the new STI office in Kelsterbach attained the status of "Regulated Agent for air cargo" from the German Federal Aviation Authority (LBA), all regulatory approvals are available for us to operate our newly acquired X-ray inspection and explosives trace detection equipment as a service to the air cargo industry. ... more

21.10.2011 - STI at the inter airport fair 2011
Successful appearance at the most important trade fair for airport-equipment, technology, design and services. ... more