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High-Efficiency 4 Inch Electric Deep Well Submersible Pump. High Efficiency Design: Brushless motor with self-design impellers for superior performance. Durable Construction: Thicker pipe walls and 100% brass wire for extended lifespan. Versatile Power Options: Supports AC, DC, and Solar/Electric hybrid power sources. Wide Voltage Range: Compatible with DC 24V-120V and AC 110V-480V systems. Certified Quality: ISO 9001:2008 approved factory with CE standard certification. Custom Branding: Accept custom brand names and OEM/ODM services available. Fast Delivery: Normal lead time of 7-15 days based on order quantity.