air compressor, silent air compressor, oil-free air compressor, 1.ISO 9001 certificate 2. HIgh reliability 3. electricity Specifications: Model: HK-8EW-180Power: 3360WSupply Voltage: 220V AC ,50 HZ (220V AC, 60HZ 110V AC, 60HZ)Air Displacement : 400L/minNoise: 70-80db Tank: 180L Factory: