DGF series of low-noise tank centrifugal fan, I was in the introduction of digestion and absorption of advanced technologies at home and abroad on the basis of development of a new type of fan. The aircraft with fire and smoke ventilation of dual-use features, with high efficiency, low noise, ease of installation, run a smooth flow, high temperatures and other characteristics, is the high-rise building fire exhaust fan with the upgrading of products, the - Compact, attractive appearance, the cabinet adopted the framework profile, box-assembled design. Me use high-quality cold-rolled steel plate from bending, double-double for the structure, filling the internal fire insulation materials, high-temperature environment to prevent condensation under the phenomenon, more effective noise damping.