Size
Blade diameter of 20 or 26 or 30 inch
Blade Material
Aluminum or metal plastic composite
Fan Guard
Iron with plastic powder coating or electrophoresis or electroplating
Support Base Frame
Iron with plastic powder coating or electrophoresis or electroplating
Motor
Copper wire or aluminum wire / cast iron or drawn iron housing
Voltage
380 or 220 or OEM customization
Certification
CB, CE, RoHS, EMC, LVD, RoHS