Custom Wire Harness & Cable Assembly Manufacturer (OEM/ODM)
TONFUL Electric specializes in the design, prototyping, and mass production of high-reliability Custom Wire Harnesses and Cable Assemblies. From simple point-to-point cables to highly complex, multi-branch electrical harnesses for automotive, industrial machinery, and home appliances, we provide complete end-to-end OEM and ODM manufacturing solutions.
What sets TONFUL apart is our vertical integration. Because we manufacture our own premium connectors, terminals, heat shrink tubing, and cable ties in-house, we eliminate middleman markups and supply chain delays. Fully compliant with IPC/WHMA-A-620 standards, our automated assembly lines and strict 100% continuity testing ensure every harness delivers flawless power and signal transmission, perfectly tailored to your engineering drawings.
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Our Wire Harness Range
Technical Specifications: Custom Wire Harness Assembly
| Specification | Capabilities / Parameters |
|---|---|
| Service Type (服务类型) | OEM & ODM Custom Wire Harness Assembly |
| Wire / Cable Types (线材类型) | UL 1007, UL 1015, PTFE (Teflon), Silicone, Flat Ribbon, Multi-core |
| Wire Gauge Range (加工线径) | 32 AWG to 4/0 AWG (Heavy-duty battery cables available) |
| Connector Sourcing (连接器来源) | TONFUL In-house Equivalents (Cost-saving) or Original Brand Parts |
| Processing Capabilities (加工能力) | Automated Cutting, Stripping, Crimping, Tin-soldering, Ultrasonic Welding |
| Protection & Binding (防护与捆扎) | Corrugated Loom, Braided Sleeving, Heat Shrink Tubing, PVC Tape |
| Testing & Inspection (测试检验) | 100% Continuity Test, Pull-Force Test, Hi-Pot Test, Visual Inspection |
| Industry Applications (应用领域) | Automotive, Industrial Control, Home Appliances, Telecom, Medical |
| Certifications (认证标准) | ISO 9001, RoHS, REACH, CE, UL (materials) |
Why Choose TONFUL Wire Harness
Vertical Integration Cost Savings
Why pay a third-party assembly house that buys parts from someone else? We manufacture the core components—wafer connectors, terminals, and heat shrink—right here at TONFUL. This vertical integration drastically reduces your Bill of Materials (BOM) cost and eliminates supply chain bottlenecks.
Advanced Automated Production
Our factory is equipped with state-of-the-art automatic wire cutting, stripping, and crimping machines. This eliminates human error, ensures absolute precision in wire lengths and strip dimensions, and allows for massive daily production capacities to meet your tight deadlines.
100% Strict Quality Testing
A single faulty crimp can ruin an expensive machine. We leave nothing to chance. Every single wire harness undergoes 100% computerized continuity testing for shorts and miswires. We also conduct rigorous pull-force testing to guarantee the mechanical strength of every crimped terminal.
Expert Engineering Support
Whether you have a fully finished CAD drawing, a rough hand sketch, or just a physical sample from a competitor, our engineering team can work with it. We offer reverse-engineering services and can suggest highly reliable drop-in connector alternatives to optimize your costs.
Robust Environmental Protection
We leverage our own extensive line of electrical protection products. We can equip your custom harnesses with high-temperature corrugated loom tubing, dual-wall waterproof heat shrink, or heavy-duty nylon cable ties to ensure they survive severe vibration and harsh outdoor environments.
Flexible MOQ & Fast Prototyping
We understand that R&D projects require flexibility. We offer rapid prototyping services (usually within 3 to 7 days) so your engineers can test the physical fit. Once approved, we can seamlessly scale from low-volume pilot runs to high-volume mass production.
Professional Selection Guide
Step 1: Submit Your Design or Sample
Send us your engineering drawings (PDF, CAD), Bill of Materials (BOM), or mail us a physical sample. If you only have a concept, our engineers will help you draft the initial wire routing and connector specifications.
Step 2: Component Selection & Cost Optimization
We will review your BOM. If you specify expensive international connector brands, we will offer our precision-engineered TONFUL equivalent connectors as an option, which can slash your material costs and lead times significantly.
Step 3: Rapid Prototyping
Before mass production, we will manufacture a "First Article" prototype. We will send this sample to you for physical testing in your actual equipment to ensure cable lengths, connector mating, and flexibility are perfect.
Step 4: Tooling & Automated Setup
Once the prototype is approved, we program our automated cutting and crimping machines and prepare any necessary test fixtures or custom assembly boards (nail boards) for multi-branch harnesses.
Step 5: Mass Production & 100% Testing
Your harnesses are assembled by our skilled technicians. Every completed unit is plugged into a computerized testing board to verify absolute electrical continuity and correct pin-out orientation.
Step 6: Custom Packaging & Delivery
We can package the harnesses according to your assembly line needs—whether that's individually bagged and labeled with your OEM part numbers, or bulk packed for immediate use. We arrange fast, secure global logistics.
Get Your Free Sample!
We provide samples for free, you just need to tell us what you need
MORE THAN JUST A CUSTOM WIRE HARNESS MANUFACTURER
Service Consultation
Whether your Wire Harness requirements are straightforward or complex, our team provides expert advice and technical consultation. For more intricate projects, we offer in-depth engineering support to ensure optimal product selection and application, guaranteeing safety and efficiency in your electrical systems.
Product Recommendations
Unsure which Wire Harness suits your system? Our specialists provide free, customized recommendations based on your specific operational and environmental requirements, ensuring you get the perfect fit for your electrical protection needs.
Installation Support
Need help with installation? Our technical team is available to answer your questions or provide hands-on support. For larger projects, we can even dispatch an engineer to your site for on-the-ground assistance, ensuring your Wire Harnesses are installed correctly and function seamlessly within your electrical network.
Logistics Support
If you lack a reliable freight forwarder, we can arrange transportation from our factory to your project site at no extra cost. Our logistics team ensures timely and secure delivery to keep your project on schedule, minimizing downtime and delays.
Frequently Asked Questions
We have compiled some common questions from our clients. If your question isn’t included here, our customer service is always available to help. We’d love to talk with you.
Q1: What files do I need to provide for a wire harness quote?
Ideally, a 2D drawing (PDF or CAD) detailing wire lengths, gauges (AWG), colors, and the specific connector/terminal part numbers (the BOM). If you don’t have drawings, clear photos with measurements or a physical sample are also perfectly acceptable.
Q2: Can you use original brand connectors (like Molex or TE), or only your own?
We can do both! If your project strictly requires original brand components, we can source them through our established supply chains. However, choosing TONFUL’s drop-in equivalent connectors will dramatically reduce your costs and shorten production lead times.
Q3: What is the lead time for a custom wire harness prototype?
For harnesses using standard wires and our in-house TONFUL connectors, prototypes can typically be completed in 3 to 7 working days. If special original-brand components need to be imported, the lead time will depend on their availability.
Q4: How do you guarantee the crimp quality of the terminals?
We use high-precision automated crimping applicators. Our quality control team regularly performs “Pull-Force Testing” to ensure the wire will not pull out of the terminal, and we conduct cross-sectional microscopic analysis to verify the copper strands are perfectly compressed without air gaps.
Q5: Is there a Minimum Order Quantity (MOQ) for custom harnesses?
We are highly supportive of new projects and offer very flexible MOQs. For standard materials, we can do small pilot runs. The MOQ usually only becomes a factor if your design requires us to purchase a massive minimum reel of a highly specialized, non-standard wire color or gauge.
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