Power Extension Cord Manufacturer & Factory
HENG-WELL is a Shenzhen, China power extension cord manufacturer and factory with manufacturing experience since 2011. We design, engineer and produce extension cords and power cords for OEM/ODM buyers, electrical distributors and project contractors in 50+ countries — not a trading company, but a factory that controls design, tooling, quality and delivery.
What We Manufacture
| Category | Typical Products | Key Standards |
|---|---|---|
| Outdoor Extension Cords | 12/3 SJTW, 14/3 SJTOW, heavy-duty NEMA 5-15P cords, 100 ft outdoor cords | UL Listed, IP65 |
| Indoor Extension Cords | NEMA 5-15P to 5-15R, multi-tap, triple-lighted end cords | UL, cUL |
| Heavy-Duty Industrial Cords | 16A–32A, IP44, rubber cable, 25–100 m | CE, RoHS |
| Locking IEC Power Cords | IEC C13/C14/C15/C19/C20/C21, P-Lock / V-Lock / TWYLOCK | UL, VDE, IEC 60320 |
| Data Center PDU Cables | Saf-D-Grid 400V (SDG400), high-density rack cords | 400V DC, Cisco-compatible |
| RV & EV Power Cords | 50A NEMA 14-50P/14-50R, 30A TT-30, L14-30, generator cords | UL, STW/SJTW |
| Marine Shore Power Cords | 30A/50A twist-lock, salt-spray resistant | UL, marine-grade |
| Retractable Cable Reels | 25 m / 40 m / 50 m / 70 m / 100 m reels | CE, IP44 |
| Stage & Display Cables | powerCON-compatible, DMX hybrid, twist-lock | VDE |
Need a configuration not listed? We support length, color, printing, private label, tooling and drawing-based customization.
Global Certification — 160+ Marks
HENG-WELL products pass a full suite of international certifications, including UL / cUL, CE, VDE, CCC, SAA, KC, BSI, UKCA, ENEC, NF, CSA — 160+ certifications in total. Our facility is ISO 9001 / ISO 14001 certified, and all products comply with RoHS 2.0 / REACH environmental standards.
OEM / ODM — Custom Extension Cords
- Custom lengths — from 0.5 m jumpers to 100 m reels
- Wire gauge — 0.75 mm² to 4.0 mm² (18 AWG to 12 AWG)
- Color customization — 8+ jacket colors
- Branding — laser-engraved, mold-stamped or ink-jet printed logos
- Plug & connector — NEMA, IEC, Schuko, BS 1363, AS/NZS, JIS and more
- Drawing-based — send your 2D/3D drawing; we handle DFM and tooling
Low MOQ for qualified projects; 24–48 h quote turn-around on standard configurations.
Quality Control — In-House Lab
Every lot passes the same QA gate: incoming material inspection → cut & strip → terminal crimp → injection molding → continuity test → packing. Our in-house lab covers high-voltage withstand, thermal aging, flex/bend, terminal pull-force, salt-spray, glow-wire and RoHS/REACH XRF screening.
Applications
- Data centers & server racks — Saf-D-Grid 400V, locking IEC
- Industrial automation — robotics, PLC, servo systems
- Outdoor & events — heavy-duty, IP-rated, weather-resistant
- RV, EV & marine — 30A/50A, twist-lock, salt-spray resistant
- Medical & security — patient monitors, cameras, access control
Why Choose HENG-WELL
- Own factory — full in-house production
- Supply-chain strength — backed by leading industry suppliers
- In-house R&D & design — 25-engineer team
- Dedicated lab — every batch tested
- 15+ years serving international OEM buyers
- Trusted by leading brands — including BYD, EcoFlow and Luxshare Precision
FAQ
1. What is your MOQ for custom power extension cords?
MOQ depends on configuration and certification target. We offer flexible low MOQ for qualified OEM projects — tell us your spec and quantity for a quote.
2. Can you produce UL/VDE/CE certified extension cords?
Yes. HENG-WELL products carry 160+ international certifications including UL, cUL, VDE, CE, CCC, SAA, KC, BSI, UKCA, ENEC and CSA.
3. Do you support OEM/ODM with custom length, color and logo?
Yes — custom length (0.5 m–100 m), 8+ colors, laser/mold/ink-jet logo, private label and drawing-based design are all supported.
4. What is your lead time for samples and bulk orders?
Standard samples ship quickly; bulk lead time depends on configuration and quantity. We provide a clear schedule with your quote.
5. Where is your factory located?
Shenzhen, Guangdong, China — in the Longhua district, with convenient access to ports for global shipping.
Get a Quote
Send us: application + connectors + voltage/current + cable type + length + certification target + quantity + destination — and we will reply with a quotation.
Contact HENG-WELL · sales02@heng-well.com
