Extension springs are versatile elastic hardware components engineered for tensile force bearing, automatic retraction and tension balancing, widely adopted in automotive parts, industrial machinery, household equipment and precision electronic assemblies. Precision CNC winding technology ensures tight, uniform coil gaps and consistent overall roundness, while professionally formed hook ends deliver accurate positioning and stable tensile force output for reliable daily operation.

Various hook styles, custom lengths and tension strengths are available to match different installation structures and mechanical tension requirements.With reliable tension stability, flexible adaptability and easy installation, extension springs serve as essential core components for mechanical resetting, tension adjustment, automatic pulling and structural balancing across diverse industrial fields.