Many different terminal devices or "hooks" are used to ensure the tension source of the tension spring. The working principle of tension spring is opposite to that of compression spring. The compression spring reverses when it is compressed, while the extension spring reverses when it is extended or pulled apart. When both ends of the extension spring are pulled apart, the spring tries to pull them back together. Like compression springs, extension springs also absorb and store energy. But unlike compression springs, most tension springs are usually under a certain degree of tension, even without any load. This initial tension determines the tightness of tension springs without any load. Xinyi spring has long-term experience in the development, design and production of all kinds of springs and different materials, and continuously pays attention to the improvement of production process. Our core competitiveness is reflected in the spring product design and development capabilities, strict quality control, good delivery and service, all our efforts to meet your needs of construction machinery spring.