Visitors crowd the Tecno-Ventil stand during a product talk

Photo: Mariusz Młynarczyk / CloudAir.tech

A crowd of visitors listens to staff on the Tecno-Ventil stand, whose angular graphics show a man relaxing on grass, a timber roof and "TIN" diffusion panels. A blue patterned diffuser hangs on the left wall, and the green and white Artiplastic stand is visible across the aisle.