eTOMMENS | DC Power Supply Manufacturer — Programmable, Regulated & High-Power DC Sources

Our DC Power Supply Series

DC power supplies are our core business — seven DC power supply families covering benchtop, laboratory, rack-mount and system-integrated DC sources, plus programmable DC electronic load as a second line, all built in our own factory.

Benchtop DC Power Supply

300W 0-20A switch-mode DC power supplies, compact benchtop units with digital display for general laboratory use.

18 models →

Linear DC Power Supply

Linear power supplies with low ripple and noise, delivering clean regulated output for sensitive circuits.

13 models →

Multi-Channel DC Power Supply

Multi-channel DC power supplies driving several independent outputs from a single chassis.

6 models →

High Power DC Power Supply

6000W and above high-power programmable DC sources with wide-range output for burn-in and test systems.

23 models →

Programmable DC Power Supply

High-precision programmable DC power supplies with fine resolution, remote sensing and communication interfaces.

56 models →

Auto-Range DC Power Supply

Auto-range DC power supplies that extend usable voltage and current range from a single unit.

3 models →

Rack-Mount DC Power Supply

Rack-mounted dual-display programmable DC regulated power supplies for 19-inch racks and system integration.

3 models →

Programmable DC Electronic Load · Second product line

Programmable DC electronic loads complementing our DC power supply line — our second product line, extending partner selection ranges.

1 model →

View all DC power supply series & models →

Why Partner with eTOMMENS

A DC power supply manufacturer with the full capability chain in-house — from R&D and production to certification and technical documentation.

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DC Power Supply Manufacturer

Every DC power supply is designed and built in our own 10,000 sq m factory in Dongguan — the foundation of every cooperation model below.

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R&D & Manufacturing Capability

30 R&D engineers at our Songshan Lake base work across operating systems, hardware, programming, communication and process control — and 10 in-house production lines turn designs into 20,000+ power sources per month.

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Quality Control & Certification

In-house calibration and aging testing, supported by documented CE (LVD & EMC) and FCC SDoC compliance for applicable product series. The certificates and the models they cover are listed on our Certifications & Honors page.

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Technical Support & Interfaces

RS232, RS485, USB, LAN and analog interfaces, with direct engineer support, customized services and door-to-door maintenance for integration, SCPI protocols and automated test systems.

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OEM / ODM & Product Development

Private-label branding and custom configurations, plus the joint development and production documented in our official catalog — your ODM path from specification to shipment.

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Private Label — Low-MOQ

Your brand on our DC power supply platforms: Low-MOQ Private Label — selected models available with flexible MOQ, subject to customization requirements.

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Global Distributor Support

Manufacturer-direct supply, product documentation, datasheets and marketing materials for qualified distributors — with direct engineer support in your market.

About us About eTOMMENS

Founded in 2015, Dongguan TongMen (eTOMMENS) Electronic Technology Co., Ltd. is a DC power supply manufacturer in the Dongguan Songshan Lake Hi-Tech Park. Our factory — spanning 10,000 sq m as documented in our official product catalog — runs 10 in-house production lines with chip mounters, wave soldering machines and calibrators, and produces over 20,000 power sources per month. As a National High-Tech Enterprise with 30 R&D engineers, 40+ patents, we integrate R&D, manufacture and sales — serving global distributors, OEM / private-label customers, ODM & R&D cooperation partners and industrial and laboratory end users with DC power supply, programmable power supply, variable power supply, benchtop power supply, adjustable power supply, lab power supply, linear power supply, high precision power supply and regulated power supply.

Company VisionTo be the most popular enterprise in the power electronics industry
Company MissionDo something interesting
Core ValuesInnovate / environmental / safe

More about our factory and team →

Manufacturer Evidence — every number traceable

The figures below are taken directly from our official company profile, product catalogs and on-site certificates — not from marketing copy.

National High-Tech Enterprise: State-recognized certification; displayed on our honor wall alongside other corporate honors.
30 R&D engineers · 40+ patents: Documented in our official company profile; R&D centers on operating systems, hardware, programming, communication and process control.
10 production lines · 20,000+ power sources / month: Official throughput figures backed by our chip mounters, wave soldering machines and calibrators.
Awards for product technology progress: Gold Award at the China Processing Fair (2023) and Guangzhou Taiwan Electronics Fair (2022); Excellence Award (2018).
Memberships & recognition: Guangdong Province Instruments & Meters Association; Dongguan Electronics Information Industry Association (executive vice-president unit); integrity benchmark enterprise.
Mission & values: "Do something interesting" — innovate, environmental, safe; objectives: downsizing, streamlining, quality improvement and safety guarantee.

Certification & Honors

National High-Tech Enterprise (China)
CE LVD (MP series) — EN 61010-1
CE EMC — EN 61326-1
FCC SDoC — Part 15 Class B
Gold Award, Product Technology Progress — China Processing Fair (2023)
40+ patents — see our on-site honor wall and official company profile

View certificates →

Applications

Our DC power supplies power real-world testing and production.

Testing & R&D Battery Charging Electroplating LED Aging & Burn-in Motor Drive & Test

Global Distributor Program

Become a Distributor

We are a DC power supply manufacturer — and we are looking for professional distributor partners in every country and region. We welcome instrument and test & measurement equipment distributors, industrial equipment distributors and technical trading companies serving R&D laboratories, production testing and industrial customers.

eTOMMENS supports qualified distributors with manufacturer-direct supply from our own factory: a 100+ model DC power supply portfolio, 20,000+ power sources per month, and a documented OEM / private-label and R&D cooperation track.

Apply to Become a Distributor Product Catalog & Documentation

Tell us about your market and business — our export team will reply with cooperation details.

eTOMMENS supports qualified distributors with:

✔ Product Portfolio — a 100+ model DC power supply portfolio from benchtop units to high-power programmable system sources, all built in our own factory.
✔ Technical Support — direct engineer support for model selection, RS232 / RS485 / USB / LAN interfaces, SCPI integration and automated test systems.
✔ Product Documentation — datasheets, user manuals, communication protocols and certification documents via our Technical Resources.
✔ Marketing Materials — our official product catalogs and product materials for your local market promotion.
✔ OEM / Private Label Support — private-label branding and custom configurations from our own production lines.
✔ R&D Cooperation — joint development and production with our 30 R&D engineers, as documented in our official catalog.
✔ After-sales Support — technical and customized services with door-to-door maintenance, per our official support-services commitment.

OEM · Private Label · ODM · R&D Cooperation

OEM / ODM DC Power Supply Solutions

You can source under the eTOMMENS brand — or ask us to build DC power supplies under your own brand. As a manufacturer with our own R&D team, factory and production lines, we support the full path from standard models to customized and private-label solutions.

DC Power Supply R&D

30 R&D engineers across hardware, programming, communication and process control — as documented in our official catalog.

Manufacturing

Our own factory: 10,000 sq m, 10 production lines, 20,000+ power sources per month.

Product Customization

Custom output ranges and specific communication interfaces built on our standard platforms.

Branding / Private Label

Your brand on our DC power supply platforms — with Low-MOQ Private Label on selected models (see below).

Technical Cooperation

Joint development and production with our R&D team, as documented in our official catalog.

Three Ways to Partner with eTOMMENS

1 · Buy the eTOMMENS Brand

Sell our DC power supplies under the eTOMMENS brand — manufacturer-direct supply from our own factory, with full documentation and technical support.

2 · Private Label

Sell under your own brand, built on our DC power supply platforms. Low-MOQ Private Label — selected models available with flexible MOQ, subject to customization requirements.

3 · OEM / ODM & R&D Cooperation

Custom output ranges, communication interfaces and joint development with our R&D team — from your specification to serial production.

Who we work with

Global Distributors Private-label Brands Test & Measurement Companies Industrial Equipment Companies R&D Companies

Low-MOQ Private Label

Selected models available with flexible MOQ, subject to customization requirements.

Ask us which models qualify for your market — we will confirm what is possible for your configuration.

Discuss Your OEM / ODM Project Explore DC Power Supplies

Technical Resources

Datasheets, user manuals, communication protocols, certification documents and product specifications — maintained by our own engineering team.

Datasheets & Manuals

26 user manuals with English specifications

Product Specifications

28 detailed parameter tables

Communication Protocols

13 protocol documents for integration

Certifications

CE (LVD & EMC) and FCC SDoC documents

Product Catalogs

5 official catalog editions

Request a Quote or Partnership

Distributor partnership, OEM / private label, ODM & R&D cooperation, or product selection — tell us the model or the voltage, current and power you need; our engineers will reply with a recommendation.

wendy@etommensglobal.com