Through Authenticate 
Product Feature:
Easy for assembly and shipment
Fan shell are recyclabe
Durable using
PVC Louver: anti-shock and high strenth
One way opening design, prevent bugs, insects invasion
Fan Material:
Shell Material: PA with 50% Glass Fiber
Louver Material: PVC
Fan Blade Material: Nylon with Glass Fiber
The motors are from FUKUTA AMEF series which are CE certified
