Automatic Door Closer
Fixed force spring for elevator: Fan lifting spring is a type of fixed force spring used by professionals to adjust the amount of electric fans. Its basic principle is to use the tensile resistance of the spring to easily keep the fan in the desired position. Compared to traditional manual adjustment, modified spring is easier to apply and more convenient to operate.
The power spring is formed by winding a steel strip on the spindle, which generates a compact power source and can have mechanical functions such as driving, tightening, loading, recovery, and automatic rewinding.
Car Vent Clips