... ) Blade Diameter: 280mmElectrical equipment:Taiwan BrandAdvantages of Parts:1.Principal Axis : made of high-quality materials , chromium plated , dynamic ... 2.Cooling System : use the patent ZL200920173954.7 of axis core water spray technology to make dustproof environmental protection ... , dust-free heating assembly, high flexible degree of principal axis , the service life is long .6.Blades : using ...