20+ Years of Excellence in Flat Spring Manufacturing

Specializing in high-precision power springs, constant force springs, and custom flat wire solutions for global OEMs.

20 Years of Craftsmanship in Flat Spring Steel Solutions.


At Xubao Spring, we don’t just manufacture springs; we engineer reliability. With over two decades of deep-rooted experience in the spring industry, our facility has evolved into a specialized hub for high-precision flat spring steel products. While many factories focus on generic wire springs, we have dedicated our craft to the complexities of flat wire—mastering the tension, durability, and fatigue life that mode.

Our Core Strength: The Mastery of Flat Wire.

We understand that a spring is often the “heart” of a mechanism. Therefore, we maintain total control over the manufacturing process. From precision slitting of raw steel strips to the final controlled heat treatment, our technicians ensure that every power spring, constant force spring, and custom clip meets strict international tolerances. Our expertise in SUS301, 60Si2Mn, and carbon steel allows us to provide solutions where others see technical roadblocks.

Quality Comes First! We Make Sure That Every Minute Detail Is Looked Into While Manufacturing Even The Smallest Product. Our Focus Is 100% On Client Needs And Satisfaction.

B2B sourcing is about trust and technical alignment. Over the years, we have built long-standing relationships with clients in Mexico, Brazil, Europe, and Southeast Asia by adhering to three factory-floor principles:
Engineering-First Approach: We don’t just take orders. We review your blueprints and offer material or torque optimizations to ensure your components last longer in the field.

Consistency in Mass Production: Through advanced CNC winding and automated stamping, we ensure the 1st piece is identical to the 100,000th.
Transparent Quality Control: Every batch undergoes rigorous load-deflection testing and hardness verification. We provide the data you need for your quality audits.

Why Global OEMs Partner With Us?

Full-Spectrum Manufacturing Capability.

While we are leaders in flat spring technology, our facility also features dedicated lines for compression and torsion wire springs. This dual capability allows our customers to simplify their supply chain by sourcing both their complex power springs and standard wire components from a single, accountable partner.

Submit your question or challenge to us,We Are Experts!​

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