HiRef 25 years stand with an NHA R-290 chiller in a green frame

Photo: Mariusz Młynarczyk / CloudAir.tech

HiRef celebrates "25 years" on a dark blue tower that names COOLtec systems as its "Vertriebs- und Servicepartner für Deutschland". A green-framed NHA unit with R-290 labels stands at the stand's front corner, and visitors sit at white bar tables next to a screen showing a total free-cooling unit.