Conductors
Conductor material and gauge are written into the spec. Our standard builds use oxygen-free copper (OFC); special conductors such as OCC are confirmed in writing at order. Copper-clad aluminum (CCA) is never sold as copper.
Supply Chain & Quality Control
We don't own a factory, and we don't pretend to. Here is how production is organized, what is checked before your goods ship, and what reports you receive.
How our supply chain works
Haisen Innovations Limited is a Hong Kong-based OEM and private-label audio cable supplier. Production takes place at our manufacturing partners in Guangdong, China. We do not publish partner names or addresses.
Haisen sits between your brand and production and owns the specification. Haisen is your contracting supplier: we quote, issue the proforma invoice and receive payment in our own name, and we are responsible for the quality of what we deliver.
Our model
| Item | Your brand | Haisen (Hong Kong) | Manufacturing partners |
|---|---|---|---|
| Requirements and approval | Defines needs, approves spec and sample | Writes the specification, recommends materials | Reviews manufacturability |
| Materials and components | — | Sets material requirements in the spec; has them checked before production starts | Sources and stores materials to spec |
| Production | — | Manages the schedule and all partner communication; tells you before any component changes | Produces to spec and golden sample |
| Inspection | Receives the inspection report and photos; can book its own third-party inspection | Has every bulk order inspected before shipment — by Haisen staff or a third-party inspector we appoint — using AQL sampling | Runs the in-process checks and 100% electrical tests that our QC plan requires, and records the results |
| Contract and payment | Pays Haisen Innovations Limited | Quotes, issues the proforma invoice, is responsible for delivery and quality | — |
Why this model works for you
- Smaller first runs. We plan first orders around stock components where possible, so you can start small.
- One point of contact. You deal with Haisen, in English, from spec to shipment.
- One accountable supplier. Your contract is with a Hong Kong company that answers for the result.
How we select and review manufacturing partners
A cable type is only placed with a manufacturing partner after that partner has shown it can build it to our specification, and every order after that counts as a review.
- Trial build before the first order. The partner makes samples of the cable type to our written specification, and we check them against it: construction, pinout, finish and length.
- A look at the line. Our team visits the production line for that cable type and confirms how the checks in our QC plan are carried out there.
- Our QC plan is a condition. The partner agrees to run the in-process checks and 100% electrical tests we require, and to accept pre-shipment inspection by Haisen staff, a third-party inspector we appoint, or your own inspector.
- Reviewed order by order. We record inspection results, defects found and on-time delivery for every order. Repeated problems lead to a corrective-action request; if results don't improve, we move that cable type elsewhere.
We do not publish partner names or addresses. Partner documents that are not public can be shared under NDA.
What the specification covers
What gets checked — and why it matters
Shielding
Shield type and construction are written into the spec, because shielding determines how well a cable rejects interference and handling noise. We quote a shield coverage figure only when it has been measured for your cable.
Connectors and plating
Connector housings, contacts and plating are specified, and we confirm the pinout in writing before sampling. Gold plating is specified for corrosion resistance and stable contact — not as a sound-quality claim.
Assembly and strain relief
Solder joints, strain relief and housing fit are compared with the golden sample, since most cable failures happen where the cable meets the plug.
Packaging integrity
Packaging, inserts, labels and barcodes are checked against approved artwork, and cartons are planned for the way your goods will ship.
Our standard QC plan, order by order
1. Specification and golden sample
Every order starts with a written specification and an approved golden sample. Every later check compares production against both.
2. Materials check before production
Before production starts, the cable, connectors and printed packaging for your order are checked against the spec: conductor gauge, jacket color and diameter, connector type and plating, and artwork.
3. First-piece and in-process checks
The first finished cables of each run are checked against the golden sample before the run continues. During assembly, solder joints, strain relief and housing fit are checked at the workstations.
4. 100% electrical and visual checks
Every finished cable is tested for continuity, polarity (pinout) and short circuits, and visually checked for workmanship before it is packed. Cables that fail are reworked or scrapped, never packed.
5. AQL pre-shipment inspection
Before every bulk order ships, Haisen staff or a third-party inspector we appoint inspects it using AQL sampling to ISO 2859-1 (equivalent to ANSI/ASQ Z1.4). Unless your quote states otherwise, we use General Inspection Level II with AQL 0 for critical, 2.5 for major and 4.0 for minor defects. Goods that fail are reworked or replaced before shipment.
6. Report before you pay the balance
You receive the inspection report with photos before you pay the balance. Nothing ships until you have seen it.
Prefer your own inspector? Third-party inspection by an agency you choose, such as SGS, Bureau Veritas or QIMA, is welcome at your own cost. Tell us when you place the order.
What the pre-shipment inspection covers
- Quantity, packing and carton marks against the order
- Appearance and workmanship against the golden sample
- Length against the spec tolerance, connectors and plating finish
- Continuity, polarity and shorts on sampled units
- Plug fit in standard jacks and sockets
- Logo, labels and barcode scans
Download this plan as a two-page PDF and see the report you receive: Standard QC plan; Blank inspection report layout.
Checks in our standard QC plan
| Check | What it checks | When |
|---|---|---|
| Continuity and short circuit | Every conductor connects end to end, with no shorts between conductors or to the shield | Every finished cable, before packing; again on AQL samples |
| Polarity / pinout | Correct pin assignment, such as XLR Pin 2 hot, TRS tip and ring, and left and right on headphone cables | Every finished cable, before packing; again on AQL samples |
| Visual and workmanship | Plugs, solder joints, strain relief, jacket, logo and labeling against the golden sample | Every finished cable; again on AQL samples |
| Length | Against the spec: ±2 cm up to 1 m, ±2% over 1 m (±1 cm on patch cables), measured as stated in the spec | First pieces of each run; AQL samples |
| Plug fit | Plugs insert, latch and release in standard jacks and sockets | First pieces of each run; AQL samples |
| Packaging and labels | Inserts, labels and barcode scans against approved artwork; carton marks | AQL samples |
Capacitance, pull, flex and other performance tests are not part of the standard plan. If your project needs them, we can arrange them with a third-party laboratory and confirm the method and results in writing.
Test reports for your product
A test report covers a specific product and belongs to the brand that commissioned it. That's why we arrange testing for your product instead of showing reports made for someone else.
- Testing for your product — We can arrange RoHS testing, and CE or FCC testing where applicable, for your product on a per-project basis, with reports issued for your brand. Tell us your target market, and we'll confirm which tests your configuration needs.
Which tests apply depends on the product and the market. Passive cables, for example, generally don't need FCC testing, and we don't describe them as "CE certified".
Requirements such as California Proposition 65 and EU product safety labeling depend on the product's materials and where it is sold. We print the label information you provide. Haisen is not your EU Responsible Person or importer; your brand or importer remains responsible for compliance in each market.
FAQ
Questions about our quality model
If you don't own a factory, who is responsible for quality?
Haisen is. Haisen Innovations Limited is your contracting supplier: we write the specification, approve the golden sample with you, and have every bulk order inspected before it ships. If a shipment doesn't match the approved spec, you deal with us, not with an unknown factory.
What happens if cables arrive defective?
We cover manufacturing defects for 12 months from delivery. Send us photos or a video of the problem, and we'll replace the goods, refund you or credit your next order. Please report short quantities and visible damage within 14 days of receiving the goods.
Can I visit where my cables are made?
Yes, for confirmed projects. Haisen can arrange a visit to the production site for your order, accompanied by our team. We don't publish partner names or addresses on our website.
Can I use my own inspection company?
Yes. Third-party pre-shipment inspection by an agency you choose, such as SGS, Bureau Veritas or QIMA, is welcome at your own cost. Tell us when you place the order so we can schedule it.
Will my products be consistent across reorders?
Reorders are made to the same written specification and checked against the same golden sample. If a component must change, we tell you before production.
Last reviewed
Ask about inspection and testing
Tell us your product and target market. We'll confirm which inspections and tests apply and what you'll receive.
Guide: factory vs sourcing partnerGuide: sourcing custom cables from ChinaStandard QC plan (PDF)Inspection report layout (PDF)