- Who
- GSMA Mobile World Congress
- What
- 109,674 people
- Where
- Spain (Barcelona)
- When
The largest carbon neutral trade show consisted of 109,674 attendees, and was achieved by the GSMA Mobile World Congress in Barcelona, Spain, from 25-28 February 2019.
The GSMA Mobile World Congress has continually grown in number of attendees, but has maintained its carbon neutral footprint.
