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One-Stop Cable Solution for Global Brands

Professional manufacturer of Automotive Harness, Industrial Cable, Medical Grade Cable, and Custom Cables since 1991. ISO9001 certified with 30+ years of expertise in wire & cable assemblies.

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Sum Wai Cable – Trusted Since 1991

With over 30 years of rich experience in electronic harness processing, Sumwai is a professional manufacturer of wire and cable assemblies based in Dongguan, China. We specialize in high-performance industrial cables, automotive wire harnesses, medical grade cables, consumer electronics cables, and AC/DC cables.

Our ISO9001:2015 certified facility ensures every product meets global standards through rigorous testing in our on-site reliability lab.

2,000㎡
Plant Area
8
Assembly Lines
50+
Team Members
1996
Year Founded
Sumwai Factory

Our Core Principles

Guiding every decision and innovation at Sumwai

Our Mission

Being the customer's first choice by satisfying their needs through manufacturing and distributing competitive, high-quality cable solutions.

Our Vision

To become a pioneer in the wire and cable assemblies industry by delivering innovative, reliable, and customized solutions globally.

Our Values

Customer-focused, teamwork, and commitment to excellence in every process and partnership.

Our Product Range

High-performance, precision-engineered cables for diverse industries

Automotive Harness

Automotive Harness

Includes Audio Harness, Camera Cable, Charging Cable, EV Wiring Harness, Lamp Harness, OBD Cable, and General Wire Harness.

Industrial Cable

Industrial Cable

Heavy Duty Cable, Flat Cable, Rubber Cable, Silicone Cable, Waterproof Cable, PV Solar Cable, and LAN/Ethernet solutions.

Medical Grade Cable

Medical Grade Cable

Precision-engineered for reliability and safety in medical devices and diagnostic equipment.

Consumer Electronics Cable

Consumer Electronics

AV Cables, USB2.0/3.0/4.0 Series, Silicone USB Cables, and custom consumer electronics wiring.

Custom Cable

Fully customized cables including coiled designs, specific connectors, and tailored lengths for unique applications.

Data Transmission Cable

High-speed data cables for automotive, industrial, and consumer applications with low latency and high durability.

Terminal Crimping & Soldering

Precision terminal crimping, connector soldering, and over-molding services for reliable electrical connections.

Bare Wire Extrusion

In-house wire extrusion capabilities for full control over material quality and performance characteristics.

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Why Choose Sumwai?

Engineered for excellence, built for reliability

ISO9001 Certified

Quality assured through standardized processes and continuous improvement.

30+ Years Experience

Three decades of expertise in electronic harness processing and cable manufacturing.

Fast Turnaround

Prompt delivery time frames supported by a 2,000㎡ production facility.

One-Stop Solution

From design to delivery – full service from extrusion to finished assemblies.

Trusted by Global Innovators

Our impact across industries

30+
Years in Industry
50+
Skilled Professionals
2,000㎡
Production Area
8
Assembly Lines

Frequently Asked Questions

What types of cables does Sumwai manufacture?

We manufacture Automotive Harness, Industrial Cable, Medical Grade Cable, Consumer Electronics Cables, Custom Cables, Data Transmission Cables, and more.

Are you ISO certified?

Yes, we are ISO9001:2015 certified and maintain a comprehensive quality management system.

Can you produce custom cable designs?

Absolutely. We offer full customization including coiled cables, specific connectors, lengths, and materials.

Where is your factory located?

Our factory is located in Dongguan City, Guangdong Province, China.

How can I request a sample?

Visit sumwaico.com and click on "Get Free Sample" to submit your request.

Let's Build a Strong Relationship

Ready to take your products to the next level? Contact us today for expert cable solutions.

Contact Information

[email protected]
+8613450606052
No.4 Pu Jiang RD, Da Ning District Humen Town, Dongguan City, Guangdong
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