Frequently Asked Questions — Wire Harness & Cable Assembly

No. We are a wire harness and cable assembly manufacturer and integrator, not a component distributor. We do not sell bare reels of wire, loose connectors, or individual terminals as standalone products. What we do is source and integrate the correct wire, connectors, terminals, and protective materials into a finished assembly built precisely to your specification. The value we deliver lives in the assembly, integration, and testing work, not in the raw components. If you only need loose parts, a distributor is the better fit; if you need a tested, ready-to-install harness, that is exactly what we build.

Getting started is simple: send us a drawing, wire list, sample, or even photos with measurements, plus your target quantity and timeline. We review the information, send back any engineering questions, and prepare a quote (typically within 24-48 hours). Once approved, we build a first article or sample for your sign-off before volume production. On confidentiality: yes, we treat every project as confidential and are happy to sign your NDA (or provide ours) before you share drawings, BOMs, or proprietary designs. We do not share customer designs, part numbers, or production data with third parties.

We have NO minimum order quantity requirement. You can order from just 1 piece for prototyping and testing purposes up to 10,000+ units for production runs. Our flexible manufacturing capabilities allow us to serve both small-scale R&D projects and large-scale production needs. Pricing becomes more competitive with larger volumes, but we welcome orders of any size.

Lead times vary based on complexity and quantity: Prototypes/Samples (1-50 units): 7-10 business days; Small Batch Production (100-500 units): 10-15 business days; Volume Production (1000+ units): 15-20 business days. Rush services are available for urgent projects with expedited fees. Lead time includes production, testing, and packaging but excludes shipping time. We provide detailed project timelines after reviewing your specifications.

Yes. We build prototypes from customer-controlled drawings and BOMs. The service includes a DFM (Design for Manufacturing) review of manufacturability, material and test-plan requirements, plus electrical testing, inspection and agreed documentation. Prototype quantity and timing are confirmed after RFQ review.

Our China headquarters (Hebei Cloom) holds ISO 9001:2015, ISO 13485:2016 and IATF 16949:2016 certifications. The Philippines facility operates to aligned quality procedures and has no independent certification. We apply IPC/WHMA-A-620 workmanship criteria, UL-recognized materials and RoHS/REACH requirements where specified by the program; certificate copies and the applicable site scope are available on request.

Absolutely. We specialize in complex, high-value custom wire harness solutions. Our capabilities include: Up to 240+ conductors in a single harness, Multi-layer cable assemblies with various wire gauges (30AWG to 4AWG), Mixed signal types (power, data, coaxial, twisted pair), Complex routing with custom breakout configurations, Overmolded and shielded assemblies. We have extensive experience with automotive, robotics, and industrial control applications requiring sophisticated designs.

Yes. Our build-to-print DFM review checks the released drawing, BOM, specified materials, connector compatibility, assembly access, tooling and test requirements for manufacturability. We flag production risks and possible alternatives for customer review; the customer retains product-design responsibility and approves every change.

We implement a comprehensive multi-stage quality control system: Incoming Inspection - inspection per the program control plan; In-Process Controls - documented process checks; Electrical Testing - 100% non-destructive continuity/electrical testing on every assembly; Visual Inspection - IPC/WHMA-A-620 workmanship criteria where specified; Additional Testing - first-article or sampled pull-force, hi-pot, environmental and mechanical tests as defined by the control plan; Documentation - lot traceability and test records available per program. The applicable China-HQ quality system and site scope are documented on request.

Yes, we offer rush production for urgent requirements. Expedited options include: 3-5 day prototypes (50% rush fee), 7-10 day small batch production (30% rush fee), Priority scheduling for repeat customers. Rush services are subject to current production capacity and material availability. Contact our sales team to discuss your timeline requirements and we will do our best to accommodate urgent needs.

While often used interchangeably, there are technical distinctions: Wire Harness - Multiple wires bound together with ties, sleeves, or conduits; typically used for organizing wires within equipment; emphasizes routing and protection. Cable Assembly - One or more cables with connectors or terminations; may include single or multi-conductor cables; emphasizes electrical connectivity and signal integrity. In practice, both terms describe custom electrical interconnect solutions, and we manufacture both types based on your specific application requirements.

We work with a comprehensive range of wire gauges: Fine Wire: 30AWG, 28AWG, 26AWG (data/signal applications); Standard Wire: 24AWG, 22AWG, 20AWG, 18AWG (general purpose); Power Wire: 16AWG, 14AWG, 12AWG, 10AWG (power distribution); Heavy Wire: 8AWG, 6AWG, 4AWG (high current applications). Wire selection depends on your voltage, current, and environmental requirements. Our engineering team can help you select the optimal gauge for your application.

Yes, we have extensive experience with high-voltage wire harness manufacturing up to 1000V DC/AC. Our HV capabilities include: Specialized insulation materials (PTFE, Silicone, Kapton), High-voltage rated connectors (TE, Amphenol, Anderson), Proper creepage and clearance design, Hi-pot testing up to 3000V AC, Compliance with UL, CSA, and IEC standards. Common applications include EV battery systems, solar inverters, industrial equipment, and medical devices. We follow strict safety protocols for HV assembly.

We work with all major connector manufacturers and maintain stock of common types: Major Brands: Molex, TE Connectivity, JST, Amphenol, Hirose, JAE, 3M, Phoenix Contact, Deutsch, LEMO, Harting, Samtec, FCI, Weidmüller. Connector Types: Board-to-board, Wire-to-board, Wire-to-wire, Circular connectors, Rectangular connectors, D-sub connectors, RJ45/USB/HDMI, Custom/Proprietary connectors. If you specify a particular connector series, we can source it from authorized distributors. We also recommend cost-effective alternatives when appropriate.

Yes, we specialize in waterproof and environmentally sealed cable assemblies: IP Ratings Available: IP54 (splash resistant), IP65 (dust-tight, water jet resistant), IP67 (submersible to 1m for 30 minutes), IP68 (continuous submersion to specified depth). Sealing Methods: Overmolding (injection molded seals), Potting (epoxy/polyurethane encapsulation), Heat shrink with adhesive, Sealed connector systems, Gland seals and cable glands. Common applications include marine equipment, outdoor sensors, automotive underhood, and industrial machinery. We can perform IP testing and provide certification if required.

We can manufacture wire harnesses with up to 240+ individual conductors in a single assembly. Complex harness capabilities include mixed wire gauges, multi-level breakouts, twisted pairs and shielded groups, and color-coded or numbered wires. Large harnesses require controlled routing, strain relief and testing. Our production experience covers automotive, robotics and industrial control harnesses.

Yes, we can manufacture wire harnesses compliant with major safety standards: Certifications: UL (Underwriters Laboratories - North America), CSA (Canadian Standards Association), CE (European Conformity), TÜV (German technical inspection), CCC (China Compulsory Certification). We use UL-recognized materials (wires, connectors, terminals). For specific product certifications, we can coordinate with third-party testing labs for compliance verification and certification marking.

We offer wire harness solutions for various temperature environments: Standard Temperature: -20°C to +80°C (PVC insulation); Extended Temperature: -40°C to +105°C (TPE/TPU insulation); High Temperature: -55°C to +150°C (Silicone insulation); Very High Temperature: -65°C to +200°C (PTFE/Teflon insulation). Temperature ratings depend on insulation material, conductor type, and environmental factors. We can recommend appropriate materials based on your operating temperature requirements and application environment.

Yes, overmolding is one of our core capabilities for strain relief and environmental protection: Overmolding Services: Cable-to-connector overmolding, Strain relief boots, Grip handles and ergonomic shapes, Multi-shot overmolding (2+ colors/materials), IP67/IP68 waterproof sealing. Materials: TPE (thermoplastic elastomer), TPU (thermoplastic polyurethane), Silicone rubber, PVC (polyvinyl chloride). We can create custom overmold tooling based on your 3D CAD models. Typical tooling lead time is 2-3 weeks with initial samples in 3-4 weeks.

We conduct comprehensive electrical and mechanical testing on 100% of assemblies: Electrical Testing: Continuity testing (all connections verified), Hi-pot dielectric testing (insulation integrity), Resistance measurement (precise ohm readings), Insulation resistance testing, Functional testing (per customer specifications). Mechanical Testing: Pull force testing (crimp strength), Insertion/extraction force (connector mating), Flexure testing (flex life cycles), Environmental testing (temperature, humidity, salt spray). Test reports are provided with every shipment including serial numbers for full traceability.

Yes. We build strictly to the pinout you supply and produce a wiring diagram for your approval before any production begins. If your pinout has an obvious conflict or ambiguity, we flag it and confirm the correction in writing, then update the drawing accordingly. Nothing goes into production until the wiring diagram and pinout are signed off. Every change is referenced against the approved drawing revision so there is no confusion about which configuration is being built.

We tailor strain relief and protection to the application. Strain relief options include heat-shrink (including adhesive-lined), connector backshells, grommets, and overmolded boots. Protective sleeving options include PVC sleeve, expandable braided sleeve, corrugated loom and conduit for abrasion resistance, and EMI shielding sleeve where electrical noise is a concern. Overmolding materials range from PVC to TPU/TPE, and we use UL-recognized materials when an NRTL-compliant assembly is required. We recommend the right combination based on your mechanical, environmental, and EMC needs.

We support several shielding approaches and advise the most effective one for your EMC goals: shielded cable with foil and/or braid shields, an overall shield over otherwise unshielded pairs, or an added EMI shielding sleeve over a completed bundle. Shield termination (360-degree backshell, drain wire, or pigtail) is defined on the drawing and tested for continuity. If you are chasing a specific noise or emissions issue, share the details and our engineers will recommend the shielding construction and grounding scheme best suited to it.

Yes. We can apply printed labels, heat-shrink printing, or wire markers per your drawing. Identification can be printed directly onto heat-shrink tubing for durable, legible marking, and we can add UL-rating wire markings where required. Typical uses include circuit IDs, connector designators, serial numbers for traceability, and customer part numbers. Tell us the marking content, location, and method you need and we will reflect it on the manufacturing drawing for approval.

Yes. We build with RoHS-compliant materials and supply the underlying component-level RoHS certificates. Note that a finished harness usually will not carry a single RoHS certificate of its own, so we provide the certs for the wire and components that make it up. We use UL-recognized wire (for example UL758 AWM) and can supply CSA-certified wire (for example CSA C22.2 No. 210) on request. For specific safety approvals we can coordinate with third-party testing labs for verification and marking.

Pricing is based on multiple factors including: Material Costs - Wire type and length, Connector types and quantity, Terminals and components; Labor Costs - Assembly complexity and time, Number of terminations, Testing requirements; Overhead - Tooling and fixtures (amortized), Quality control, Packaging and documentation; Volume - Larger quantities receive volume discounts, Setup costs spread across quantity. For accurate pricing, we need: detailed specifications, target quantity, and delivery timeline. We typically provide quotes within 24-48 hours with detailed cost breakdowns.

Volume pricing is quoted from the released drawing, BOM, tooling, test scope, material breaks, and forecast. Blanket purchase orders, scheduled releases, annual commitments, and consignment programs may be available for qualifying programs. Contact our sales team for project-specific pricing.

We offer flexible payment terms based on order size and customer relationship: New Customers - 100% payment before production (wire transfer, PayPal, credit card); After First Order - 50% deposit, 50% before shipment; Established Customers - Net 30 or Net 60 terms available after credit review; Large Projects - Milestone-based payment schedules (30% deposit, 40% at production start, 30% at shipment). Payment Methods: Wire transfer (T/T), PayPal (for small orders), Credit card (via Stripe), Letter of credit (for large international orders). We accept USD, EUR, and CNY.

Yes, we ship worldwide from our facilities in China and the Philippines: Shipping Methods: Express (DHL, FedEx, UPS) - 3-7 days, Air freight - 7-10 days, Sea freight - 20-35 days (cost-effective for large orders). We handle all export documentation including: Commercial invoice, Packing list, Certificate of origin, Material safety data sheets (MSDS), Customs declarations. Delivery Duties Paid (DDP) and Delivery At Place (DAP) terms available. We have extensive experience shipping to USA, Canada, Europe, Australia, and Asia.

Shipping options and costs depend on weight, destination, and urgency: Express Shipping (DHL/FedEx/UPS): 3-7 days delivery, $25-100 for small packages (0-5kg), $100-300 for medium packages (5-20kg), Best for prototypes and urgent orders. Air Freight: 7-10 days delivery, $5-15 per kg, Suitable for 20kg+ shipments, Airport-to-airport or door-to-door. Sea Freight: 20-35 days delivery, $500-1500 per cubic meter, Most economical for large/heavy shipments, Full container (FCL) or less-than-container (LCL). We provide detailed shipping quotes with your order quote. Free shipping available for orders over $5,000 (excluding remote areas).

Yes, we offer consignment and vendor-managed inventory (VMI) programs for qualifying customers: Program Benefits: Guaranteed stock availability, Reduced lead times (ship within 24-48 hours), Locked-in pricing for contract period, Flexible pull schedules, Reduced administrative burden. Requirements: Minimum annual volume commitment ($50,000+), 3-12 month rolling forecast, Signed consignment agreement, Regular communication of demand changes. This is ideal for customers with steady demand, just-in-time manufacturing, or seasonal fluctuations. Contact our sales team to discuss your inventory management needs.

Harnesses are coiled and secured to protect terminations, then individually bagged and labeled with part number, revision, and quantity for easy receiving. Sensitive assemblies are packed in anti-static (ESD) bags, and connectors are protected with caps or foam inserts to prevent damage to contacts in transit. Items are then placed in foam-lined or partitioned cartons sized to the order. We can also follow your specific packaging and labeling specification (custom bag counts, barcode labels, kanban quantities). Standard incoterms are EXW, FOB, or DDP, shipped via DHL, FedEx, UPS, air, or sea depending on your cost and speed preference.

We do not provide customer-owned design, customer-provided schematic review, CAD drawing creation or reverse-engineering services. We manufacture build-to-print from customer-controlled drawings and BOMs, and provide DFM review covering manufacturability, material availability, assembly risk and the customer test plan before production.

No. Product CAD and harness routing models remain customer-controlled inputs. We review released 2D or 3D files for manufacturability and use them to prepare production tooling, work instructions and inspection records without taking ownership of customer-owned design.

As part of build-to-print DFM review, we can flag availability, tooling and manufacturability risks in customer-specified wire and connectors. Any alternate is documented for customer engineering approval; the customer retains responsibility for electrical ratings and customer-owned design.

Yes, prototyping is highly recommended and we strongly encourage it before production: Prototype Process: Submit your design specifications, Engineering review and DFM feedback (1-2 days), Quote approval and payment, Prototype fabrication (7-10 days), Shipping and customer testing, Design refinement if needed, Production release. Prototype Benefits: Verify form, fit, and function, Test electrical performance, Identify design issues early, Validate manufacturing process, Reduce risk of production delays. Most customers order 3-10 prototype units for internal testing and validation. Prototype tooling can often be reused for production, reducing costs.

No. We do not reverse-engineer undocumented assemblies or create product drawings. For second-source or legacy production, the customer must provide an approved drawing, BOM and acceptance test plan. We can then perform a build-to-print DFM review and flag manufacturability, material-availability and testability issues before quoting.

Yes, comprehensive documentation is included with every shipment: Standard Documentation: Commercial invoice and packing list, Test reports (continuity, hi-pot, resistance), First article inspection report (FAIR), Certificates of compliance (RoHS, REACH), Material certifications (wire, connectors). Optional Documentation (upon request): Detailed inspection reports with photos, Material traceability documents, Certificate of origin, Mill test reports (MTR), PPAP documentation (for automotive), ISO certificates and quality manual. All assemblies are serialized with laser-etched or printed labels for complete traceability. We maintain production records for 7+ years for warranty and audit purposes.

A released drawing, BOM and acceptance test plan are required before production. Photos or a sample may help clarify an RFQ, but we do not reverse-engineer the product or create the customer design. We return missing-information questions and begin build-to-print work only after the customer approves complete controlled specifications.

Yes, custom and non-standard wire colors are available. A non-standard color typically carries a per-color reel minimum (roughly 200-500 meters depending on gauge and insulation) and may add a small cost, while standard colors avoid that minimum. In most cases custom colors do not affect lead time once the wire is in stock. If color coding matters for your circuit identification, tell us the scheme and we will confirm availability and any minimums up front.

Yes. Before any volume run we produce a first article (first sample) with inspection data for your approval. This lets you verify form, fit, function, and conformance to the drawing before committing to production quantities. A sample or FAI fee may apply depending on complexity, and it is often credited toward the production order. Approving the first article also locks the build configuration so subsequent units are made to the same validated standard.

We always build to the approved drawing revision, and every quote, sample, and production order references that revision number. If a discrepancy appears, for example a length or wire callout that does not match what you expected, we confirm which revision you are working from and resolve it before or at the first article stage rather than after production. Keeping a clear revision reference on both sides prevents costly rework and ensures the harness you receive is the one you signed off on.