Dongyang Hstube stand with flexible duct samples and duct fan poster

Photo: Mariusz Młynarczyk / CloudAir.tech

Dongyang Hstube, "Duct Manufacturer Since 1996", hangs samples of flexible aluminium, black and blue ducts between its posters. Panels show a "Green color pvc coated canvas duct", a "Duct ventilator fan" and flexible aluminium foil duct in booth 4-441 of the China Pavilion.