Sourcing from Vietnam · Vietnam → World
Electronics Manufacturers in Vietnam: EMS, Components and Finished Products
Vietnam has become one of the leading electronics exporters in Asia, driven by large foreign-invested plants in the north and south. Beyond the major brand factories, a growing base of EMS providers and component makers serves OEM buyers, and GLG helps you find, verify and ship from them.
Key products
- PCB assembly (SMT and through-hole) and box build
- Cable assemblies and wire harnesses for appliances, industrial and automotive use
- Power supplies, adapters and chargers
- LED lighting products and drivers
- Small home appliances and consumer electronics
- Electrical wires and cables, connectors
- Plastic and metal enclosures for electronics
- CCTV, audio and smart home devices made to OEM design
Sourcing regions
- Bắc Ninh and Thái Nguyên – major electronics assembly clusters, phones and supporting component suppliers
- Hà Nội – high-tech parks, EMS and engineering services
- Hải Phòng – large electronics and display plants near deep-sea ports
- TP.HCM – Saigon Hi-Tech Park, semiconductor back-end and EMS
- Đồng Nai and the Southeast region – cables, appliances and electrical equipment
Common HS codes
| HS code | Description |
|---|---|
| 8504 | Electrical transformers, power supplies and converters |
| 8517 | Telephone sets and communication equipment |
| 8544 | Insulated wire, cable and harnesses |
| 8538 | Parts for electrical switching and control apparatus |
| 9405 | Lamps and lighting fittings, including LED |
| 85 | Electrical machinery and equipment and parts |
HS codes are indicative. Confirm the exact classification of your product before you declare it.
Certifications buyers ask for
- CE marking (EU) and UKCA (UK) with technical files
- FCC authorisation for the US and other radio approvals where relevant
- UL, ETL or equivalent safety listings for North America
- RoHS and REACH compliance for substances
- ISO 9001, plus IATF 16949 for automotive or ISO 13485 for medical devices
- IPC-A-610 and IPC/WHMA-A-620 workmanship standards
Logistics notes
- High-value electronics often fly from Nội Bài or Tân Sơn Nhất; volume products and appliances ship by sea in 40HC.
- Use ESD-safe packaging and moisture barrier bags for PCBA and components.
- Lithium batteries in products need dangerous goods documents and UN 38.3 test summaries.
- Northern factories ship via Hải Phòng, southern ones via Cát Lái and Cái Mép.
- Export processing enterprises (EPE) and bonded zones have specific customs procedures that GLG handles daily.
Sourcing tips
- Separate brand-owned plants from open EMS providers; only the latter usually take new OEM projects.
- Ask which components are sourced locally and which are imported, as this affects lead time and origin.
- Review process controls such as AOI, X-ray, ICT and functional test coverage.
- Confirm that certifications belong to your product, not only to the factory.
- Agree on an approved component list and change notification procedures.
- Run a pilot build before mass production and track first pass yield.
Vietnam's role in global electronics
Electronics has become one of Vietnam's largest export groups. Large foreign-invested plants for phones, computers, displays and semiconductors have attracted a network of tier-one and tier-two suppliers. For OEM buyers, the most accessible part of this ecosystem is the EMS segment and component makers producing cables, harnesses, power supplies, enclosures and lighting.
Many buyers look at Vietnam to diversify supply chains away from a single country. Local content is growing but many components are still imported, so lead times and costs depend on how the factory manages its supply of chips and materials.
What to specify
| Product type | Key specifications | Typical quality checks |
|---|---|---|
| PCBA | Gerber files, BOM, IPC class, test coverage | AOI, X-ray for BGA, ICT, functional test |
| Cable and harness | Wire gauge, insulation, connector brand, length tolerance | Pull test, continuity, hi-pot |
| Power supply | Input range, output, efficiency level, safety standard | Burn-in, hi-pot, safety marking review |
| LED lighting | Lumen, CCT, CRI, driver type, IP rating | Photometric test, aging test |
How GLG sources and verifies electronics suppliers
- Shortlist factories with comparable products and the right certifications for your market.
- Verify business registration, investment licence, export record and customs status (domestic or EPE).
- Factory visit to check SMT lines, test equipment, ESD controls and traceability systems.
- Review product certificates and test reports, and confirm the laboratory is accredited.
- Coordinate engineering samples and pilot builds, then pre-shipment inspection with functional testing.
Quality systems worth checking
Good EMS factories control incoming materials, keep moisture sensitive devices in dry storage, record solder paste and reflow profiles, and trace each board by serial number. Ask to see a recent failure analysis report and how corrective actions were closed. For cable and harness makers, look for crimp height monitoring and pull testing at each shift.
Buying process, payment and Incoterms
- Share the RFQ with drawings, BOM, annual volume and compliance targets.
- Receive shortlisted suppliers and quotations, including component sourcing assumptions.
- Sign NDAs and development agreements directly with the supplier.
- Approve samples and a pilot run, then sign the supply contract.
- Inspect, pack and ship by air or sea.
FCA or FOB terms are common, letting the buyer choose air or sea. For electronics, a deposit with balance against inspection is typical; for longer programs, buyers often move to open account after a track record. Tooling for enclosures should be paid separately with ownership written into the contract.
Risks to manage
- Component shortages or substitutions that change product performance.
- Certificates that do not match the actual product or factory.
- Intellectual property leakage; protect designs with contracts and split production where needed.
- Origin questions when key components come from a third country; check rules for your market.
GLG supports supplier verification, inspection and logistics only. Product compliance and the supply contract remain between buyer and supplier.
Frequently asked questions
Can I source from the big brand plants in Vietnam?
Usually not. Those plants are owned by or dedicated to global brands. GLG focuses on open EMS providers and component makers that accept OEM projects.
Do Vietnamese EMS factories buy components themselves?
Most offer turnkey sourcing, but many components are imported. Buyers can also consign key parts to control cost and quality.
Can GLG ship products with lithium batteries?
Yes, with correct classification, UN 38.3 test summaries, packaging and dangerous goods documents for air or sea.
GLG connects, verifies and coordinates, but is not a party to the sales contract: the purchase agreement, price and performance obligations are between buyer and seller. Verification and inspection results reflect conditions at the time of the check and do not guarantee future performance.