Solenoid Valve Spring Solution

CATALOG Precision Components (Suzhou) Co., Ltd. provides precision spring solutions for Changshu Junchi Technology Co., Ltd., supporting their production of automotive solenoid valve assemblies. The project centered on the development and volume manufacturing of solenoid valve line springs.

Changshu Junchi specializes in R&D, design, production, and sales of components for new‑energy and intelligent vehicles, serving OEMs including Honda, Nissan, General Motors, Volkswagen, and Cummins. Its products are supplied to markets such as Germany, Brazil, and India, reflecting both a broad global footprint and stringent quality standards.

Challenge & Response

Customer Need	Our Solution	Outcome
High force-value precision Spring force tolerance must be within ±10%, with ideal control under ±5%	• Implemented internal force-value control within ±5% • 100% full-inspection of spring length and load during production	Force-value accuracy exceeded customer specifications, ensuring stable solenoid valve performance
Rapid specification updates & multi-variant support Frequent design changes and diverse spring specifications	• Established flexible response process for fast design updates • Aligned development cycle with customer product iteration pace	Successfully matched customer's update rhythm, enabling timely support for new variants
Stringent quality & global compliance Must meet quality standards for international OEMs and export markets	• Enforced full-process quality monitoring and traceability • Maintained batch-to-batch consistency through statistical control	Products passed validation by Junchi Technology and multiple end-clients, becoming a preferred supplier

CATALOG Spring Solutions

Customized & Adaptive Engineering

We offer flexible design and manufacturing services tailored to rapid specification updates and diverse spring variants, meeting precise performance requirements across different market segments.

Exceed‑Spec Internal Standards

While the customer required force tolerance within ±10%, we implemented an internal control limit of ±5%, ensuring superior force‑value accuracy and long‑term performance stability.

100% In‑Process Inspection

Every spring undergoes full inspection of length and load during production. Even at increased operational cost, we maintain this rigorous checkpoint to prevent any non‑conforming product from leaving our facility.

CATALOG provides expert consulting services, technical insights, and professional solutions for various types of springs. Welcome to get in touch with us.

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