RuisiElectronic modul
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Ruisi · Founded 2010

Every board has to survive the ageing test

Ruisi develops and manufactures power modules, sensors and control boards on six SMT lines with its own reliability laboratory, shipping 26 million units a year into industrial control, smart home and new energy applications.

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26M unitsShipped a year
6linesSMT lines
120patentsPatented technology
Why Choose Us

Turning expertise into measurable results

Every step from briefing to after-sales has a defined owner and standard.

Reliability laboratory

Temperature cycling, vibration, salt spray and EMC testing in house; new designs run 500 hours of ageing before release.

Fast development

An 86-strong engineering team turns standard variants around in 2–3 weeks and custom designs in 8–12.

Three-stage inspection

SPI, AOI and X-ray inspection with 100% functional test, records traceable to the station and batch.

Consistency

Key components are bought from the original manufacturers and the BOM is locked, so batches behave the same way.

Products

A product range built for real scenarios

Every item is validated in real use and can be adapted to your specification.

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AC-DC power modulesMain line

AC-DC power modules

5 W to 300 W with wide input, high efficiency and low ripple, certified for in…

DC-DC convertersIndustrial grade

DC-DC converters

Isolated and non-isolated series rated from −40 °C to +85 °C for industrial co…

Temperature and humidity sensorsHigh precision

Temperature and humidity sensors

Digital output modules accurate to ±2% RH and ±0.3 °C for environmental monito…

Motor control boardsCustom design

Motor control boards

Brushless motor drive and control boards with field-oriented control and sever…

Smart home control boardsIoT

Smart home control boards

Wi-Fi, Bluetooth and Zigbee boards with cloud platform integration, including …

PCBA contract manufacturingOne-stop

PCBA contract manufacturing

Component sourcing, SMT placement, through-hole assembly and test, suited to s…

In Numbers

Track record, in numbers

Every figure comes from actual deliveries and client feedback.

26M units
Shipped a year
Three application areas
6lines
SMT lines
Including high-speed placement
120patents
Patented technology
Including 26 invention patents
99.6%
Outgoing pass rate
2025 figure
Our Work

Selected projects

A look at how we solved problems for clients like you.

Long-term supply of industrial power modules

Long-term supply of industrial power modules

30 W to 150 W modules supplied at 860,000 units a year.

Seven years, no batch returns

Battery management board development

Battery management board development

Custom BMS sampling and control board designed and industrialised.

Prototype to production in 10 weeks

Smart home control board programme

Smart home control board programme

Wi-Fi control board plus cloud platform delivered as one package.

2.6 M units in the first year

PCBA contract manufacturing

PCBA contract manufacturing

Small and medium volume PCBA supply, including component sourcing.

Average lead time 12 days

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About Us

Ruisi · Electronic modules and components

Ruisi develops and manufactures power modules, sensors and control boards on six SMT lines with its own reliability laboratory, shipping 26 million units a year into industrial control, smart home and new energy applications.

  • Client outcomes come first
  • Delivery quality is the baseline, not the goal
  • Long-term thinking over short-term gain
  • We keep sharpening our craft
Learn MoreContact Us
Founded2010
Team720 staff
Scale57,000 m²
HQNo. 6 Ruisi
How We Work

A clear path from brief to delivery

Each stage has a defined deliverable and a named contact.

01

Requirement review

Clarify the scenario, the metrics and the budget range

02

Proposal & quote

A tailored plan with itemised pricing

03

Delivery

Milestones agreed up front, progress shared as we go

04

After-sales follow-up

We track how it performs in use and keep improving it

Testimonials

What our clients say matters more

Three years in, what stands out is how little we have to chase them. They do what they promise, and they answer quickly when something comes up.
Wang JianguoClient · Head of Procurement
They are not the cheapest on the line, but the total cost works out lower. Far less rework and far fewer meetings, which matters over years.
Li HaiyanClient · General Manager
Technical conversations are smooth — they understand the application, not just the product. Our requirements are understood accurately, which is rare.
Zhang PengClient · Technical Director
Certifications

Qualifications that define what we can deliver

National High-Tech Enterprise2016
ISO 9001 / IATF 16949 certified2019
Provincial engineering technology centre2021
Specialised SME accreditation2022

Trusted by leading companies

Meridian Semiconductors
Vantage Components
Northgate Electronics
Cedar Sensors
Pinewood Devices
Atlas Microsystems
Harbour Instruments
BlueWave Circuits
News

Latest updates

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Two high-speed SMT lines add 40% PCBA capacity132026.08

Two high-speed SMT lines add 40% PCBA capacity

The lines handle 01005 components and include in-line SPI and AOI inspection.

2026-08-13
Power module range certified to the new efficiency standard142026.06

Power module range certified to the new efficiency standard

Main models improved average efficiency by 2.6 points and cut standby power be…

2026-06-14
Technical note: measuring ripple on a power module correctly092026.05

Technical note: measuring ripple on a power module correctly

Probe choice, bandwidth limiting and grounding — the mistakes that show up in …

2026-05-09
FAQ

Things you may want to know

Still have questions? Contact us — we reply within one business hour.

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Which regions do you cover?

We serve clients nationwide and handle cross-region delivery. Tell us your location and requirements and we will assign the right team.

How do I get a quotation?

Send us your requirement, quantity and delivery expectation through the form or by phone. We issue a formal quotation within 1–2 business days.

Can you provide samples?

Yes. Depending on your requirement we can send samples or arrange a small trial run so you can validate performance in real use.

How is after-sales support handled?

A dedicated after-sales team provides support through the whole service period, with response times stated in the contract.

Can we work together long term?

Yes. We build long-term relationships, and most clients have worked with us for over three years. Annual agreements can fix price, capacity and quality terms.

Every board has to survive the ageing test

Tell us what you need — we will route it to the right specialist within one business day.　+86 512 6888 9900

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