Manufacturing at eTOMMENS
Our own plant, our own lines and our own test stations — the facility behind every power supply we ship. Photographed on site in Dongguan, Guangdong.
A high-tech enterprise integrating R&D, manufacture and sales of DC power supplies, serving laboratories, production lines and system integrators worldwide.
Founded in 2015, Dongguan TongMen (eTOMMENS) Electronic Technology Co., Ltd. is located in the Dongguan Songshan Lake Hi-Tech Park, a picturesque place in Guangdong, China. We have a factory spanning 10,000 square metres. Arranged with chip mounters, wave soldering machines, calibrators and other production devices, we can make over 20,000 power sources per month.
We are a high-tech enterprise integrating R&D, manufacture and sales, and we focus on DC power supplies, programmable power supplies, variable power supplies, benchtop power supplies, adjustable power supplies, laboratory power supplies, linear power supplies, high-precision power supplies and regulated power supplies. We specialize in creating optimised solutions for unique applications, and we can offer OEM, ODM and custom service.
We have mighty strength and uphold integrity management. We own intellectual property rights and our own brand, eTOMMENS. We have a crack development team, along with a tight partnership with many R&D institutes and institutions of higher education nationwide. As an expert in various operating systems, hardware technologies, programming technologies, communication technologies and process control technologies, we have successfully originated all sorts of high-end instruments and apparatuses jointly with domestic companies, such as high-precision DC/AC power sources and ultrasonic power sources.
Our own plant, our own lines and our own test stations — the facility behind every power supply we ship. Photographed on site in Dongguan, Guangdong.
To be the most popular enterprise in the power electronics industry.
Do something that we love.
Innovate / environmental / safe.
Capacity figures that our customers rely on when they plan production and qualification schedules.
square metres
power equipment
eTOMMENS started in 2015 as a small engineering team working out of Dongguan Songshan Lake Hi-Tech Park. The first products were benchtop regulated supplies built for local electronics factories that needed stable, repeatable DC output for burn-in and functional test.
As customers pushed for higher power, finer resolution and remote control, the product line grew into switch-mode, linear, multi-channel, auto-range and high-power programmable supplies. Along the way we added our own SMT and wave soldering capacity, in-house calibration benches and a dedicated ageing area, so that design, build and verification stay under one roof.
Today our instruments ship to laboratories, production lines and system integrators worldwide, and are used in applications ranging from semiconductor and battery test to motor drive evaluation and automated end-of-line fixtures. The engineering habits from those early days have not changed: understand the application first, then specify the supply around it.
We continue to invest in a development team of 30 R&D engineers and in long-term cooperation with research institutes and universities, so that new interface, control and measurement requirements can be turned into production-ready hardware rather than one-off prototypes.
The certificates below are the ones we hold as document files, and each card links to the original file. The certificate number, the standard and the covered models shown for each are taken from that file. Anything not listed here is not claimed on this page.
Certificate of Conformity No. PTC19120204001S-LD01, issued by Dongguan Precise Testing Service Co.,Ltd (Jacky Ou, Manager) on March 26, 2019. Low Voltage Directive 2014/35/EU, applied standard EN 61010-1:2010+A1:2019. DC Power Supply, MP series: eTM-305MP, eTM-3010MP, eTM-603MP, eTM-605MP, eTM-1002MP, eTM-1003MP, eTM-1202MP, eTM-1502MP, eTM-2001MP. Input 220-240V~, 50Hz, 0.85A, 150W; output 30Vdc, 5.0A, 150W Max. Safety only: this certificate does not cover EMC, FCC or RoHS. Models named in the certificate that appear in a model table on a product page of this site: eTM-305MP, eTM-3010MP, eTM-1003MP, eTM-1502MP, eTM-605MP. The certificate also names eTM-603MP, eTM-1002MP, eTM-1202MP and eTM-2001MP; those four have no product page on this site, so no page is claimed for them, and this card is the record of their certification.
Certificate and test report PTC25052012601E-EM01, CE-EMC to EN 61326-1. The certificate text in these files is not machine-readable, so no product scope is stated here beyond what the file names carry. Per documentation supplied for this build, this file covers model 305MS. 305MS is a model of its own and is not mapped to eTM-305MP unless evidence proves the two correspond.
Supplier's Declaration of Conformity and test report PTC25052012601E-FC01, FCC SDoC Part 15, Class B. This is an SDoC, not an FCC ID grant. Per documentation supplied for this build, this file covers model 305MS. 305MS is a model of its own and is not mapped to eTM-305MP unless evidence proves the two correspond.
A one-page scanned EMC certificate copy. It carries no extractable text, so its certificate number, standard edition and covered models cannot be confirmed from the file and are not stated here.
Need a certificate for a model or standard that is not covered above? Send us the standard and model number and we will confirm whether we hold it before you rely on it in a qualification file.
We were founded in 2015 in the Dongguan Songshan Lake Hi-Tech Park and have manufactured DC power supplies continuously since then, growing to a factory of 10,000 square metres and a monthly output of over 20,000 power sources.
We are a manufacturer. Design, SMT assembly, wave soldering, calibration and ageing all take place on our own premises, which is why we can modify output ranges, interfaces and firmware for each customer's application.
Yes. We offer OEM, ODM and custom service, including private-label branding, custom output voltage and current ranges, specific communication interfaces, and application-specific control behaviour for automated test systems.
Share your output voltage, current, power, interface and test profile, and our engineers will recommend the right model or a custom configuration.