Factory direct sales, one-year warranty to buy with confidenceDetachable verification of thicker inner material and lubricating oilQuality Assurance: All-copper movement, strong wind, fast heat dissipation and coolingSpecial customization: Waterproof and moisture-proof series fans All metal series fans Temperature control series fans Dual power series fansThe company's existing products have passed CE certification, EMC certification, ROHS certification, and obtained UL certification