
AC-DC power modules
5 W to 300 W with wide input, high efficiency and low ripple, certified for industrial and appliance use.
- Stable supply
- Technical support
- Custom specs
Each step comes with its timing and documents, so you can plan production and customs.
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.

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

5 W to 300 W with wide input, high efficiency and low ripple, certified for industrial and appliance use.

Isolated and non-isolated series rated from −40 °C to +85 °C for industrial control, telecoms and vehicle use.

Digital output modules accurate to ±2% RH and ±0.3 °C for environmental monitoring and smart home products.

Brushless motor drive and control boards with field-oriented control and several communication interfaces.

Wi-Fi, Bluetooth and Zigbee boards with cloud platform integration, including firmware and app support.

Component sourcing, SMT placement, through-hole assembly and test, suited to small and medium volumes.
A look at how we solved problems for clients like you.

30 W to 150 W modules supplied at 860,000 units a year.
Seven years, no batch returns
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Custom BMS sampling and control board designed and industrialised.
Prototype to production in 10 weeks
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Wi-Fi control board plus cloud platform delivered as one package.
2.6 M units in the first year
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Small and medium volume PCBA supply, including component sourcing.
Average lead time 12 days
View detailsThree 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.
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.
Technical conversations are smooth — they understand the application, not just the product. Our requirements are understood accurately, which is rare.
Still have questions? Contact us — we reply within one business hour.
We serve clients nationwide and handle cross-region delivery. Tell us your location and requirements and we will assign the right team.
Send us your requirement, quantity and delivery expectation through the form or by phone. We issue a formal quotation within 1–2 business days.
Yes. Depending on your requirement we can send samples or arrange a small trial run so you can validate performance in real use.
A dedicated after-sales team provides support through the whole service period, with response times stated in the contract.
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.
Tell us what you need — we will route it to the right specialist within one business day. +86 512 6888 9900
Product enquiry, solution review or partnership — just leave a message.
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