Manufacturer: USA&CN King Hvls Industrial Ceiling Fan High Volume Low Speed for Workshop exclusive custom. USA&CN JIE coaxial helical gear reducer with enlarged frame size (output diameter 40mm) -- reduce the risk of radial force, one of the safety guarantees.King Hvls Industrial Ceiling Fan High Volume Low Speed For Workshop Omala S4 super long life synthetic gear oil, 20,000 hours maintenance free -- improve the quality of oil products, one of the safety guarantee. Germany's top imported Simrit output double oil seal design - reduce the possibility of oil leakage seal, long-term quality assurance. Box automatic exhaust valve - reduce the risk of oil emulsification, one of the safety guarantees. OriginalKing Hvls Industrial Ceiling Fan High Volume Low Speed For Workshop enhanced roller bearing - reduced radial offset, lifetime warranty.