◆ Reasonable cone designing which can concentra-te blowing and direction,so the air flow is bigger and the fan will be energy-efficient, lower noise.

◆ The frame  is hot galvanized with advanced auto-machining techincs.The thickness of the galvanized layer is 275g/㎡.

◆ 6 Blades one fan with Stainless steel blade, Model 430BA.  Do balance test to make sure the weight between each blade is similar.

◆Using advanced front double door opening device small wind resistance，good sealing，high efficiency，lengthened cone design improve exhaust power．

◆Galvanized steel frame is made of 180g／㎡。galvanized layer avoid rust．

◆Fan double doors closed with the rubber sealing which effectively avoid air backflow when start fans at different time．Greatly improve the operation efficency by 15-20％compared with the...