... Outer frame material:plastic 3.Certificate:CE 4.Warranty:3 yrs for ball xinyujie standard 5010 dc cooling fan Specification:1. ... Global Sharing!"Usage:IT ,house appliance ,machine equipment etc.1.Performance: low noise, light vibration,strong cooling, muti-role, ... maintenance-free. Oil and gas pollution-free, The fan use import high-speed, thermostability ball bearings ,hundred percent guarantee non ...