◇ Reasonable cone designing with big air volume ,low noise;
◇ Imported bearing ,high-strength ,low noise and long service life;
◇ Shutter are made of high strength hot-galvanized steel sheet ,antioxidant ,light weight and no distortions;
◇ High strength dabber aluminum - magnesium alloy wheel .high strength and long service life;
◇ Mirror designed and injection moulding Stainless steel blade, with big air volume, never distortion and broken..