Ningbo Zongda Electrical Spring Co., Ltd.
Global Leader in Power Springs and Constant Force Springs design & manufacturing

Ningbo Zongda Electrical Spring Co. was founded in 1993 and has grown into a prominent manufacturer of springs and spring strips in China. Our product line includes items like power springs and constant force springs, which are applied as vacuum cleaner springs, cable and hose retractor springs, gasoline generator starter springs, timer springs, seatbelt springs, and much more. We utilize high quality equipment in our advanced factory to achieve outstanding production efficiency with great quality levels. In addition to our standard line of spring products, contact us today to learn more about our customization options.

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We have no stock spring products. All of the power springs and constant force springs are designed for your specific applications

    1. Power Springs
    2. Power SpringsPower springs are also referred to as clock springs, spiral torsion springs, flat springs and motor springs.
    1. Constant Force Springs
    2. Constant Force SpringsConstant force springs are also called constant tension springs and hold a loading force at a constant rate.
    1. Constant Torque Spring
    2. Constant Torque Spring Constant torque springs are made using a coiled steel strip, and are a constant force spring designed with dual cores.
    1. Spring Strips
    2. Spring StripsSpring strips are typically made of Martensitic steel or stainless steel such as 62Si2MnA, 65Mn, BTX(1078) steel.

Ningbo Zongda Electrical Spring Co. was founded in 1993 and has grown into a prominent manufacturer of springs and spring strips in China. Our product line includes items like power springs and constant force springs, which are applied as vacuum cleaner springs, cable and hose retractor springs, gasoline generator starter springs, timer springs, seatbelt springs, and much more.

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No. 33-35, Xingyuan Road, Zonghan Industry District, Cixi city, Zhejiang Province
Mr. Huang