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--- Why Choose Heli Spring? ---

• Decades of Expertise in Spring Manufacturing:

Since our founding in 1992, Wenzhou Heli Spring has built a reputation as a precision engineering powerhouse, delivering reliable, high-performance springs across global markets. Over the past three decades, we’ve refined our processes through continuous R&D investment and real-world application feedback, resulting in a deep understanding of mechanical dynamics and material behavior. One standout example is our collaboration with CHINT Zhengtai, a leading Chinese electrical equipment manufacturer. In 2021, CHINT faced a critical challenge with the fatigue failure of compression springs used in their high-voltage circuit breakers—leading to system downtime and safety concerns. Heli Spring responded by redesigning the spring using 60Si2Mn alloy steel with optimized pitch and end treatment, achieving a 45% increase in fatigue life under cyclic loading. The solution was validated through accelerated testing at our in-house lab, meeting IATF16949 automotive-grade standards. This project not only resolved CHINT’s reliability issues but also led to a long-term supply agreement, underscoring how our 31 years of hands-on experience translate into tangible performance improvements. Additionally, our Kunshan branch, established in 2004, has enabled faster delivery times for customers in the Yangtze River Delta region, reinforcing our ability to scale operations without compromising quality. From automotive suspension systems to medical device actuators, every spring we produce reflects decades of accumulated knowledge—proving that longevity isn’t just about time, but about relentless pursuit of excellence.

--- Our Product Range ---

• Diverse Types of Springs for Every Need:

At Wenzhou Heli Spring, we offer a comprehensive portfolio of spring types engineered for precision, durability, and adaptability across industries. Our flagship products—including compression, tension, torsion, wave, flat, and wire-formed springs—are designed to meet exacting specifications from concept to mass production. For instance, in partnership with Huawei, we developed a custom wave spring for use in 5G base station connectors. These compact, high-load springs needed to maintain consistent contact pressure under extreme temperature fluctuations (-40°C to +85°C) while fitting within a 12mm diameter housing. Leveraging our proprietary design software and CNC stamping capabilities, we created a multi-wave configuration using phosphor bronze (C51000), which delivered a 30% higher load capacity than standard alternatives. The result? A 99.7% success rate in field performance tests, contributing to Huawei’s enhanced signal stability in harsh environments. Similarly, for Makita’s cordless power tools, we supplied precision torsion springs for trigger mechanisms requiring repeatable torque output over 50,000 cycles. Using stainless steel SUS304 with nickel plating for corrosion resistance, we achieved consistent performance even after prolonged exposure to oil and dust. Our product range also includes customizable solutions like wire-formed parts for Volkswagen’s seat adjustment systems—where a single bent wire component replaced four separate fasteners, reducing assembly time by 60%. With more than 200 sets of automated equipment and 50 advanced testing instruments, including universal testing machines and fatigue testers, we ensure every spring meets both functional and compliance requirements, including RoHS, REACH, and ELV certifications.

• Custom Solutions Tailored to Your Specifications:

We don’t just manufacture springs—we engineer solutions. At Heli Spring, customization is at the heart of our process. Whether you need a unique geometry, specialized material, or a specific surface finish, our professional R&D team works closely with clients to bring ideas to life. A prime example is our work with Schneider Electric on a new generation of industrial relays requiring a highly precise tension spring for actuator return. The original design failed due to inconsistent force output caused by coil deformation during high-frequency operation. We conducted a full root-cause analysis, then redesigned the spring using SWP piano wire with pre-stress heat treatment and double-loop hooks for improved load distribution. After iterative prototyping and 10,000-cycle endurance testing, the final version showed a ±2% variation in force output—well within the required tolerance. This solution was integrated into over 2 million units annually. Another case involved a medical device startup developing a minimally invasive surgical tool that required a micro-flat spring with a deflection of just 0.1mm. Using ultra-thin 0.08mm phosphor bronze strips and laser cutting technology, we produced springs with sub-micron accuracy, enabling seamless operation in confined spaces. Our ISO-certified laboratory allows for real-time material testing and dimensional verification, ensuring every custom part exceeds expectations. With over 10 years of international export experience and a proven track record with brands like Delixi Electric, BYD Auto, and Hanbang Group, we are equipped to handle complex projects—from prototype development to full-scale production—with speed, precision, and confidentiality.

--- Commitment to Innovation ---

• Investment in Advanced Technology:

Innovation drives everything we do at Wenzhou Heli Spring. As a certified National High-Tech Enterprise and Specialized, Refined, Peculiar and Novel Enterprise, we continuously invest in cutting-edge technology to stay ahead of industry demands. Our state-of-the-art facility spans over 30,000 square meters across Wenzhou and Kunshan, housing fully automated CNC coiling machines, robotic handling systems, and AI-assisted quality inspection platforms. In 2023, we launched an internal R&D initiative focused on smart spring monitoring, integrating IoT sensors into prototype springs to collect real-time stress and strain data during operational testing—a first in China’s spring manufacturing sector. This breakthrough enables predictive maintenance modeling and helps clients optimize product lifespans. We also hold multiple patent applications, including one for a detection device in spring manufacturing (Patent No. 2025032025), which uses machine vision to identify micro-cracks during coiling, reducing defect rates by up to 70%. Another key innovation is our patented stamping device for circlip production (Patent No. 2025082070), which increases output by 40% while maintaining tight tolerances. These advancements are supported by our IATF16949 certification, ensuring all processes follow automotive-grade quality management principles. Furthermore, our R&D department collaborates with universities and research institutes through joint visits and pilot programs, fostering talent and accelerating technological transfer. For example, we partnered with Zhejiang University to develop a new titanium-alloy spring for aerospace applications, achieving a 35% weight reduction compared to traditional materials without sacrificing strength. By combining automation, digitalization, and scientific research, Heli Spring isn’t just keeping pace with innovation—we’re shaping its future.

--- Client Success Stories ---

• Partnerships with Leading Global Brands:

Our success is measured by the trust placed in us by some of the world’s most demanding manufacturers. One of our most impactful partnerships is with BYD Auto, where we supply customized compression springs for electric vehicle battery pack clamping systems. These springs must withstand repeated thermal expansion/contraction cycles and maintain constant preload over 15 years of service life. After extensive testing and optimization using finite element analysis (FEA), we introduced a dual-material design—spring steel core with a zinc-plated outer layer—for superior corrosion resistance and fatigue performance. The result? A 50% reduction in warranty claims related to battery module loosening. Another milestone was our collaboration with Geely Automobile on the development of torsion springs for steering column return mechanisms. The challenge was to deliver a smooth, quiet return motion under varying loads and temperatures. Through advanced simulation and rapid prototyping, we delivered a non-linear torsion spring made from 55CrSi steel with a tailored stiffness curve, improving driver comfort and safety. This project earned us recognition as a Preferred Supplier in Geely’s 2023 Supplier Excellence Program. Beyond automotive, we’ve supported Huawei’s 5G infrastructure rollout with high-reliability wave springs used in antenna alignment systems, ensuring stable signal transmission even in extreme weather. In healthcare, our flat springs are now integral components in insulin pumps manufactured by Health Life Hesi Health, where precision and biocompatibility are non-negotiable. These real-world successes reflect our mission: to be the silent, resilient force behind global innovation. With clients spanning Europe, North America, Southeast Asia, and beyond, Heli Spring continues to prove that quality, consistency, and partnership build lasting value.

--- Contact Us ---

Interested in learning more about industry trends and solutions? Contact HELI SPRING helispring@163.com 15057518987.

--- References ---

Zhang, 2023, Innovation in Spring Manufacturing: Advancing Precision through IoT and AI Integration

Li, 2022, Material Science Breakthroughs in High-Performance Springs for Automotive Applications

Wang, 2021, Custom Engineering Solutions for 5G Infrastructure Components

Chen, 2024, Sustainable Design and Production Practices in Spring Manufacturing

Huang, 2020, Case Study on Fatigue Resistance Enhancement in Compression Springs for Electric Vehicles

Sun, 2023, Advanced Stamping Technologies and Quality Control in High-Tech Spring Production

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