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RuisiElectronic modul
Hotline+86 512 6888 9900
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Exporting since 2010

Trusted by buyers in 39 countries

  • Minimum order1,000 pcs
  • Packing & loadingAntistatic bag · 100 pcs / carton
  • CertificationsCE · RoHS · FCC · UL
Get a QuoteProducts
Filter by categoryHS code8534.00Download full catalogue
AC-DC power modules
AC-DC power modules

5 W to 300 W with wide input, high efficienc…

DC-DC converters
DC-DC converters

Isolated and non-isolated series rated from …

Temperature and humidity sensors
Temperature and humidity sensors

Digital output modules accurate to ±2% RH an…

Motor control boards
Motor control boards

Brushless motor drive and control boards wit…

Smart home control boards
Smart home control boards

Wi-Fi, Bluetooth and Zigbee boards with clou…

PCBA contract manufacturing
PCBA contract manufacturing

Component sourcing, SMT placement, through-h…

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…

Trade terms

Terms agreed up front

MOQ, lead time, payment terms and port of loading — saves three rounds of email.

Minimum order1,000 pcs
Lead time20 – 40 days
Payment termsT/T · L/C at sight
IncotermsFOB · CIF · CFR
Port of loadingShenzhen · Shanghai
HS code8534.00
Packing & loadingAntistatic bag · 100 pcs / carton
Private label & customisationOEM · ODM · Private label · PCBA
Sample policySample free, freight collect
QC & inspectionSGS · TÜV · Intertek
How an order runs

From order to arrival, five steps in writing

Each step comes with its timing and documents, so you can plan production and customs.

  1. Order confirmed1,000 pcs
  2. Deposit receivedT/T · L/C at sight
  3. Production & QC20 – 40 days
  4. Loading & customsShenzhen · Shanghai
  5. Documents & dispatchCI · PL · CO · B/L
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
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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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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