Main Features:
A. The ZYJX series of cooling  fans’ design and fabrication have maximum theoretical efficiency and very good over loading characters and can adapt to serious environment and ensure the top feasibility. All the blower fans used in tropic region are of IP55 standard and F insulation level.
B. The adjustment of loosing and tightening the V type belt is very simple. Only to adjust the adjustable bolt in the air input side is okay, without dismantling other parts.
C. The six-impeller are made up of aviation aluminum-magnesium alloy, with light weight, high intensity and good toughness
D. The central driving belt pulley is only supported by a ball bearing, and the special structure has been recognized by the clients since 1979.
E. The shutter can proof wind, dust and rain.
F. The particular automatic on-off structure of the shutter vane is realized through 2 non-drive hundred-rotation weight dropper with automatic device, which can ensure the fault-free of blower fan for many years.