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CHINA MANUFACTURER

Huajin Technology

Established in 2021, we are a high-tech enterprise specializing in the research, development, and production of magnetic latching relays, serving global industrial and commercial partners.

10M+ Annual Capacity
8,000 SqM Facility
120+ Team Members
30% Exported Globally
CCC Certified State Grid TUV Certified ISO9001 10+ Patents
R&D
Quality
Customization

Customized Relay Solutions

-- Steady & Reliable Manufacturer --

Introduction

Customized relay solutions address application-specific requirements that cannot be met by standard catalog products. Huajin Technology offers engineering services to modify relay parameters including coil voltage and resistance, contact material selection, terminal configuration, housing dimensions, and environmental sealing. The customization process begins with requirement analysis and feasibility assessment, followed by prototype development and validation testing. Typical modifications include non-standard coil voltages (3V to 220V DC), custom pick-up and drop-out voltage characteristics, specialized contact materials for unique load conditions (inductive, capacitive, or DC), and mechanical alterations such as PCB pinout changes or custom bracket designs. All customized relays are manufactured in Huajin's ISO9001-2015 facility and can be certified to TUV, CCC, UL, or other standards per customer requirements.

Huajin Technology — Custom Relay Manufacturer

Huajin Technology Jiaxing Co., Ltd. provides engineering and manufacturing services for custom relay solutions. The company's 8,000-square-meter facility in Jiaxing City houses design engineering, prototyping, tooling, and production capabilities. With over 120 employees and annual production capacity exceeding 10 million units, Huajin supports custom projects from concept to volume production. ISO9001-2015 quality management certification, TUV certification, and CCC certification provide the quality framework for custom product development.

Specifications

Parameter Customization Range
Coil Voltage 3V – 220V DC (custom values available)
Coil Resistance Custom values matched to application drive circuits
Pick-up Voltage Adjustable per system requirements
Contact Material AgSnO2, AgNi, AgCdO, Au-plated (signal)
Terminal Configuration PCB pin, quick-connect, screw, bus bar, custom
Housing Dimensions Standard or custom profiles
Environmental Sealing Flux-tight, wash-tight, IP-rated options
Safety Approvals TUV, CCC, UL, CE (per customer target market)
Testing & Validation Electrical life, temperature, vibration, dielectric
Use Cases
Applications
  • Non-standard coil voltage for specialized controllers
  • Custom contact materials for unique load conditions
  • Special terminal configurations for PCB layout
  • Specific safety certification requirements
  • OEM product integration and white-label solutions
Key Benefits
Advantages
  • Full engineering support from concept to production
  • Fast prototyping (2–4 weeks sample delivery)
  • ISO9001-2015 quality management for custom products
  • Flexible minimum order quantities
  • Compliance testing to global standards

Frequently Asked Questions

What is the minimum order quantity for custom relays?

Minimum order quantities vary by customization complexity. Simple modifications (coil voltage, terminal plating) may be available at lower MOQs, while full custom designs require engineering and tooling investment with higher MOQs. Contact our engineering team for specific project requirements.

How long does the custom relay development process take?

Prototype samples are typically available within 2–4 weeks of specification finalization. Production tooling and validation testing may extend the timeline to 6–8 weeks for full validation prior to volume production.

Can you certify custom relays to UL, TUV, or CCC?

Yes. Huajin can pursue certification for custom relays to UL, TUV, CCC, or other standards as required by the target market. Certification timelines depend on the testing requirements of the specific standard.

What information do you need to start a custom relay project?

We require a detailed specification including coil voltage and resistance, contact load requirements (current, voltage, AC/DC), contact configuration (1A, 1C, etc.), terminal type, housing dimensions, mounting requirements, and any target safety certifications.

Material Selection Guide

  • Contact Material Selection: AgSnO2 for high-current and inductive loads, AgNi for general-purpose AC switching, AgCdO for motor and heavy inductive loads, Au-plated for low-level signal switching (1–5 mA).
  • Housing Material Options: PBT (general purpose), PA66 (high strength), LCP (high temperature) — all UL94 V-0 rated.
  • Coil Wire Options: Class B (130°C), Class F (155°C), Class H (180°C) insulation materials.
  • Terminal Plating Options: Tin (solderability), Silver (high current), Gold (signal), or custom finishes.

Production and Customization Services

Huajin Technology provides complete custom relay services including engineering consultation, prototype development, validation testing, and volume production. Customization options include coil parameters, contact materials, terminal configurations, housing designs, and environmental sealing. We support OEM and ODM projects with full confidentiality and intellectual property protection.

Huajin Technology Jiaxing Co., Ltd.
  • 0+

    Established in May 2021

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    Annual exports account for about 30%

  • 0㎡

    The company occupies an area of 8,000 square meters.

Huajin Technology Jiaxing Co., Ltd. was established in May 2021 and is located at 707 Yanyu Road, Yucheng Town, Haiyan County, Jiaxing City, Zhejiang Province. It is a high-tech enterprise specializing in the research and development, production, and sales of relays.The registered capital of the company is 10 million yuan, covering an area of 8000 square meters, with more than 120 employees. The annual production capacity of magnetic latching relays is over 10 million, of which exports account for about 30%. The company has obtained ISO9001-2015 quality management system certification, and its relays have passed CCC certification, State Grid certification, TUV certification, etc. It also holds multiple technical patents. Our main products include motor relays, single-phase, two-phase, and three-phase magnetic latching relays, which have a wide variety of types and can meet various customized solutions for customers.

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