The deal will see DB Systems continue to be an official audio-visual supplier for the firms for the next two years, working on more than 20 shows across the UK and Europe.
The work with Clarion will be shared with Aztec Event Services.
"It is deeply satisfying to be in a position where we can now plan investments over a 24-month period, allowing us to deliver the very best in audio-visual contracting services," said DB Systems sales director Oliver Richardson.
"The commitment shown by Clarion and Incisive Media is very encouraging and speaks volumes for our business as a whole."
The news follows the announcement that DB Systems will continue to be the official AV supplier for organiser UBMi BV over the next two years.
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