Our electric screw drivers have 4 strong points: 1. Low-voltage DC motor driver,motor with long service life,high safe coefficient through low voltage screw driving,convenient maintenance and low cost. 2. Double power supply of input AC(100-240v)and output(20-30V),frequency conversion&constant voltage,more stable torque force,temperature and rev. 3. Segmentless speed-adjusting+built-in soft start-up+stable voltage multifunction design. Lever or pressurizing-down start-up meets the requi

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