VIENNA chair obtained domestic use certification passing tests:
- Seat and back static load test EN 1728:2012+AC:2013
- Seat and back fatigue test EN 1728:2012+AC:2013 ( 25.000 cycles )
- Leg forward static load test EN 1728:2012+AC:2013
- Leg sideways static load test EN 1728:2012+AC:2013