Our Products
Factory Direct
About Us
Ningbo Doto Electric Co., Ltd. is a professional low voltage electrical products manufacturer located in Ningbo, Zhejiang — one of China's largest electrical equipment production bases. Earliest factories were founded in 2000, and today we run a 3,000㎡ production plant with 100 skilled workers and a 5-person engineering team.
- Full-range production: from components to finished assemblies
- Integrated trading & manufacturing entity — factory-direct prices
- Strict QC with CE & ROHS certified product lines
- Exported to Japan, Turkey, India, Vietnam, Singapore, Russia and more
Certifications & Quality
Capacitor RoHS Report
Capacitor CE LVD Certificate
AC Contactor RoHS Report
AC Contactor CE Certificate
Hour Meter RoHS Report
Hour Meter CE Certificate
Counter CE LVD Certificate
Counter CE EMC Certificate
Meet Doto at Trade Shows Around the World
Face to Face with Our Global Partners
Exhibitions are where long-term cooperation begins. In April 2025 we exhibited in Russia, meeting customers from Eastern Europe and Central Asia — presenting our circuit breakers, AC/DC contactors, oil/gas gauges and connecting terminals in person.
- Live product demos — touch, test and compare the real quality
- Direct talks with our sales & engineering team on site
- Local payment & agency support solutions for Russian customers
- New catalogues, samples and factory-direct prices for visitors
Exhibition Moments
Real photos from our booth





News Center

Why AC Contactors Fail: Chatter, Welded Contacts, Burnt Coils
Three Symptoms, Three Different FingerprintsAn AC contactor is a simple device: an electro...
Read More →
How to Select a Thermal Overload Relay for Motor Protection
What a Thermal Overload Relay Actually Protects A thermal overload relay is the component ...
Read More →
Why Contactor Coil Voltage Is the First Thing to Check
Among all the parameters on an AC contactor datasheet, the coil voltage is the one that de...
Read More →Our Company Location
Ningbo Doto Electric Co., Ltd.
- 📍Address:No.99 Jinchuan Road, Jiaochuan Street, Zhenhai District, Ningbo, Zhejiang, China
- 📞Tel:0086-574-81859726
- 📱Mobile:0086-130-7191-2583
- ✉️Email:Nanna@doto-cn.com












