ABOUT ZONGDA

Precision Built on Experience

Custom spiral spring engineering and manufacturing, supporting reliable motion from first concept through volume production.

Discuss Your Project Explore manufacturing & quality

Ningbo Zongda spring manufacturing facility

Since 1992

34+Years of spring expertise

18,000 m²Manufacturing facility

130+Employees

20Technical team members

1.8MPieces per month

WHO WE ARE

Engineering motion for the mechanisms behind everyday products.

Founded in Ningbo, China, Ningbo Zongda Electrical Appliance Spring Co., Ltd. specializes in power springs, starter springs, constant force springs and other custom strip-spring products.

Our team supports projects from design evaluation and prototyping through testing and stable volume production. Rather than forcing a standard part into your assembly, we develop the spring around your torque, working turns, installation space and service-life requirements.

Reception at Ningbo Zongda Electrical Spring

Your requirements.
Our engineering.
Reliable motion.

HOW WE WORK

From requirement to repeatable production

A practical engineering path designed to reduce uncertainty before scale-up.

Engineering process from requirements and design through prototype and production

INTEGRATED CAPABILITY

Built to support custom work at production scale

Engineering, spring forming, process control, inspection and packing are coordinated to keep custom projects moving from sample to repeat order.

Zongda production team working on the factory floor — Production & assembly

Precision spring strip forming equipment — Precision forming

Zongda operator setting up spring forming equipment — Skilled setup

Steel strip processing equipment in operation — Strip processing

Application Engineering

Design review and reverse engineering around real mechanism constraints.

In-house Manufacturing

Multiple equipment categories for forming a broad range of custom springs.

Quality Control

Defined inspection and process controls from material through finished parts.

Long-term Supply

Stable support for prototypes, qualified programs and ongoing production.

APPLICATION EXPERIENCE

Spring solutions shaped by real products

Our experience spans mechanisms where controlled torque, smooth rewinding and dependable cycle life matter.

Garden hose reels
Industrial hose & cable reels
Vacuum cleaner cord rewinders
Recoil starter systems
Fitness equipment
Displacement sensors

CERTIFICATIONS & RECOGNITION

A wall built on systems, engineering and earned trust.

Current ISO management systems anchor a broader record of technical, industry and customer recognition earned through decades of spring manufacturing.