A torsion spring is a type of spring, usually made of metal wire with a circular cross-section. Its main feature is to store elastic energy in a torsional manner. This kind of spring is usually in a spiral shape and will elastically deform when it is subjected to torsion or rotational force. When the torsion force disappears, the spring will return to its original shape and produce rebound.

A compression spring is a spring bent into a spiral shape, usually made of metal wire, and its cross-section can be round, square or other shapes. The main function of a compression spring is to store elastic energy when compressed by an external force, and to rebound and return to its original shape or position when the external force is relieved or disappears. This characteristic makes compression springs widely used in many mechanical devices and systems.

A constant force spring is a special spring used to measure or control force or pressure. They are designed to have specific elastic properties so that they deform or shift accordingly when acted upon by external forces, thereby providing a means by which the magnitude of the force can be measured or controlled.

Tension springs are made of metal and have a certain degree of elasticity. They can be stretched or compressed to generate elasticity. They are mainly used in various mechanical equipment and products.

Special springs refer to customized springs designed and manufactured according to specific application requirements. Their shape, structure, material or performance characteristics are different or outstanding to a certain extent from conventional springs. These springs may have a very specific function or purpose and are often used in industrial applications that require highly customized solutions.

Power spring is a special type of spring whose main function is to store and release energy for driving or providing power to mechanical devices or systems. Unlike traditional compression or tension springs, power springs are typically designed to release stored energy when needed to create motion or propel mechanical components.

A special-shaped spring is a spring that has a different shape or structure than a traditional spring. It is usually a custom spring designed and manufactured to meet the needs of a specific application. Unlike traditional springs with circular cross-sections or spiral shapes, special-shaped springs may have irregular shapes, special bends or structures to meet specific engineering needs.

A spring with a special shape and function, usually used in mechanical components to secure, connect, or provide pressure. This spring is shaped like a ring or loop, usually has a curved or bent structure, and is elastic to provide a certain amount of compression or restoring force.