ROOF VENTILATING FAN WITHOUT POWER

1. High-quality structure Rigid sphere shape structure, permanently lubricated upper and lower ball bearings to ensure long life without maintenance, no need to replace the zero Cases, the U.S. PEER, UBC, and Japan NSK high-precision bearing system fully closed absolutely excellent quality assurance. 2, the operation of sophisticated equipment UBC high-precision bearing system fully closed, highly heat-resistant synthetic grease lubricant for the bearings of the best that can permanently self-lubricating, non- Take care, even if wind breeze in less than 2 km, it is also self-operation. 3, green ventilation Use of natural wind-driven principles, not the use of motor power, to avoid the cost of running electricity-free, non-stop self-turbine ventilator Rotation, so silent no noise when running. 4, wide applicability Diameter with a unique angle for a variety of industrial plant light steel contour plate roof, concrete roof can be safe Installed. And does not require support, installation and convenient