RO-KA-TECH is the trade fair for underground wastewater infrastructure, which opens its doors to trade visitors every two years in Kassel. The trade fair was first held in 1996 under the umbrella of the New Leipzig Trade Fair. What began as a small industry get-together with 60 exhibitors from 3 countries has developed over the years into an internationally renowned trade fair. The RO-KA-TECH is now the most important national/european trade fair in the field of underground wastewater infrastructure.