The use of variable frequency power supply, reliable and stable, energy saving and environmental protection.Full plastic handle, ergonomic design, easy to use.With torque adjustment function, semi-automatic electric screwdriver, can effectively improve the operating efficiency. To ensure that the workpiece without damage, the appearance of integrity.Internal use of imported motor, low operating noise.Suitable for air conditioning, office communication, instrumentation, ower tools and other industries, as well as the electronics industry for notebook computers, LCD monitors and other small household appliances