High Quality Brushless 12V DC Cooling Fan Lower Noise Cooling Fan. Low Noise Operation: Equipped with imported oil bearings for quiet performance. Durable Flame Retardant Blades: Injection molded PBT blades with 30% glass fiber and VO grade rating. Anti-Corrosion Frame: Black painted aluminum alloy die-casting structure ensures moisture resistance. High Insulation Resistance: Provides 500 megaohms or more insulation resistance for safety. OEM and ODM Services: Flexible customization options including design and sample-based customization. 100% Quality Inspection: Every finished product undergoes visual and functional inspection.