Leading Wire Harness Manufacturer You Can Rely On
Custom wire harnesses for automotive, industrial, medical, and more—built fast, tested 100%, ready for scale.
Sino-conn is a China-based wire harness manufacturer with over 18 years of experience serving OEM factories, engineers, and distributors. We help customers turn technical ideas into production-ready harnesses — from prototype to mass production — with flexible MOQ, fast drawings, and reliable delivery.
- 30min CAD drawings, 24h accurate quotation
- 3 days for samples, 2–3 weeks for bulk orders
- OEM/ODM customization — any connector, any pinout
- UL / ISO / ROHS / REACH certified production
- No MOQ. Even 1 piece is welcome
Why Choose Sino-conn
Speed, precision, and proven quality—designed for your deadlines.
01
Fastest Engineering Response
Send your photo or rough idea — we’ll return CAD drawings in 30 minutes to 3 hours. Perfect for urgent RFQs.
02
Real Customization
We adjust everything — cable length, pin definition, connector brand, jacket color, and EMI shielding.
03
No MOQ, No Stress
Prototype for testing or full batch — we handle it all. 1 piece or 10,000 pcs, no problem.
04
Flexible Pricing Options
Choose between original connectors (TE, Molex, JST, etc.) or cost-saving compatible replacements — performance guaranteed.
05
100% Quality Inspection
Every single harness passes 3-stage testing: process check, full inspection, and final QC before shipping.
06
Real Factory Support
We are not a trader. You deal directly with engineers who understand voltage, impedance, bending radius, and EMI.
07
Fast Lead Time
Urgent samples in 2–3 days, regular samples in 1 week, mass production in 2–4 weeks.
08
Certifications Ready for Export
UL, ISO9001, ROHS, REACH, PFAS-free — ready for global compliance audits.
Our Wire Harness Portfolio
We build custom wire harnesses for every industry — from electric vehicles to medical devices. Each harness can be tailored in connector type, wire gauge, shielding, jacket, labeling, and color.
Our Services
OEM/ODM Manufacturing
From concept to production — our engineers translate your specs into stable, cost-effective harness solutions.
Custom Design & Engineering
We help optimize your design: choose better materials, connectors, or layout for efficiency and durability.
Rapid Sampling
Need urgent samples? We ship prototypes in as fast as 72 hours for validation and testing.
After-Sales Support
Lifetime technical support, video inspection, and free engineering consultation after delivery.
About Sino-conn Factory
With 18+ years of specialization in wire harness manufacturing, Sino-conn runs a 10,000 m² factory equipped with 20 assembly lines, 6 testing lines, and a professional team of 20+ engineers. We combine engineering precision with factory speed — ensuring every order is handled like a project, not a transaction.
Why You Can Trust Sino-conn
- Fast Engineering Support – 30 min drawings, 24 h quotation, 3-day samples.
- Strong Production Capacity– 200,000+ pcs/month output; urgent projects handled within 2-3 weeks.
- Stable Quality System – 100 % full inspection, < 0.1 % defect rate, UL / ISO / ROHS / REACH certified.
- Flexible Production – No MOQ, quick turnaround, ready for both prototypes and mass production.
- Reliable Communication – Engineer-to-engineer contact, clear updates, zero misunderstandings.
- Global Export Experience – 86+ countries served, documentation and compliance handled with ease.
Sino-conn isn’t just another factory — it’s a technical partner that helps you deliver on your commitments, keep your timeline, and build long-term confidence with your end customers.
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Tailored to Your Specs
We make every cable the way you need it.
Length & Connector Type
TE, Molex, JST, AMP, or customized plugs.
Wire Material
PVC, TPE, TPU, Silicone, or braided jacket.
Shielding & EMI
Foil, braid, or double-shielded for noise control.
Pin Definition & Layout
Custom pinout mapping according to your schematic.
Color & Labeling
Branding, barcode, or custom numbering available.
Capacity & Quality Control
Modern lines, rigorous QC, and repeatable results at volume.
Process + Final + Pre-shipment QC
Each cable is inspected three times before shipment.
100% Electrical Testing
Every harness is tested for continuity, resistance, and polarity.
Durability & Environment Testing
Oil, flame, UV, and bending tests ensure long life.
Full Traceability System
Each batch has a unique QR code and inspection record.
Packaging & Shipping
At Sino-conn, we know that packaging and delivery are as important as manufacturing quality. Every harness you order is packed for protection, traceability, and efficiency — because your project can’t afford damage or delays.
1.Inner Protection — Product Level
- Each harness is packed in anti-static, dust-proof PE bags to prevent static or oxidation.
- Every bag carries a label with product name, lot number, quantity, and QC stamp.
- Cable bundles are grouped by project or PO number for easy warehouse handling.
- Average inner bag capacity: 50–100 pcs, depending on cable length and type.
2.Outer Packaging — Carton Level
- Harnesses are placed into double-wall five-layer corrugated cartons (strength grade K=200).
- Each carton includes foam or honeycomb separators to avoid deformation during shipping.
- Standard carton size: L48 × W35 × H30 cm, net weight around 18–22 kg per box.
- All cartons are sealed with reinforced tape and “Fragile / Do Not Stack” markings.
3.Palletizing & Export Handling
- Cartons are film-wrapped and strapped on fumigation-free wooden pallets (ISPM15 compliant).
- Each pallet contains about 20–30 cartons, total weight around 400–600 kg.
- We provide photo and video records before shipment for client confirmation.
- Export markings and barcodes can be customized according to your warehouse system.
4.Shipping Options & Lead Time
- Sample Orders: DHL / UPS / FedEx — average 5–7 days worldwide.
- Bulk Air Freight: 3–5 working days to major airports.
- Sea Freight (FCL/LCL): 15–30 days depending on destination port.
- DDP / Door-to-Door: Available for U.S., EU, Japan, Korea, and Southeast Asia.
5.Traceability & Documents
- Every shipment includes a packing list, inspection report, and photos.
- Each carton and pallet carries a unique QR code linked to your order number.
- Export documents (COC, COO, invoice, PL, and HS code) are ready for customs clearance.
Proven Results Across Industries
From prototypes to mass production, we deliver outcomes.Trusted by 600+ Global Brands
Case 1：EV Startup
They needed a high-voltage harness for testing, within 5 days. We drew, sampled, and shipped in 72 hours. Approved in first inspection.
“They understood our drawings immediately — and delivered faster than any supplier we tried.”
Case 2 – Medical Device OEM
The client required full ROHS + REACH documents and EMI-shielded cables. We customized a solution with double-braided shielding.
“Their documentation and precision saved us weeks of validation.”
Case 3 – Robotics Integrator
Needed flexible cables for robotic arms with continuous bending.
We used silicone jacket + drag-chain design.
“Excellent bending performance, stable supply, great cooperation.”
Try A sample first？
Hey, don’t hesitate to try & feel the FREE SAMPLES before making up your decision
Meet the Harness Experts
Fast drawings, fast quotes, multilingual video calls, even on-site visits.
Built by Engineers, Delivered by Experts
CAD in Hours
Quote in 24h
Video Reviews
Global Visits
wire Harnesses for Every Industry Applications
Reliable in automotive, EV, medical, industrial, telecom, robotics, home appliance, defense.
1. Automotive & EV
High-voltage, battery, and control cables
2. Medical Devices
Safe & compliant wiring
3. Industrial Automation
PLCs, sensors, robotic arms
4. Telecom Systems
Ethernet & signal cabling
5. Consumer Electronics
Appliance and home device wiring
6. Defense & Aerospace
Ruggedized, shielded harnesses
7. Renewable Energy
PV, inverter, and battery wiring
8. Marine & Outdoor
Waterproof IP69K assemblies
Certified for Safety and Performance
UL/ISO systems, RoHS/REACH materials, PPAP on request.
Processes audited, materials traceable, and tests recorded to ensure global compliance.
Frequently Asked Questions
1. Can I order just one sample?
Yes. No MOQ. 1 piece is welcome for testing.
2. How fast can I get a quote?
Usually within 24 hours after receiving your specs or photo.
3. What if I don’t have a drawing?
Send us a picture or the product—it’s enough for us to replicate.
4. What certificates do you provide?
UL, ISO, ROHS, REACH, PFAS-Free, COC, COO.
5. Do you make both original and compatible connectors?
Yes. We can use TE/Molex originals or compatible alternates to control cost.
6. What’s your normal lead time?
Samples: 3–5 days. Bulk: 2–4 weeks depending on quantity.
7. Can you sign NDA for new project designs?
Yes, confidentiality agreements are always welcome.
8. How do you ensure quality?
Three-step inspection + 100% electrical testing before shipping.
9. Do you support OEM/ODM branding?
Yes, we can label or package with your brand.
10. Can I visit your factory?
Of course. We welcome on-site or virtual factory tours anytime.
Custom Wire Harness, Made Easy
From drawing to delivery — fast, accurate, and factory-direct.
3 Simple Steps to Start Your Project:
1.Tell Us What You Need
Send drawing, photo, or spec — we’ll review and advise instantly.
2.Get Solution & Quote
Receive optimized design and quotation within 24h.
3.Approve for Production
Confirm drawings and start mass production within days.
GET IN TOUCH
For all inquiries, please feel free to reach out at:
- info@sino-conn.com
- (+86) 13924649075
