DOWIN is committed to helping our customers successfully keep their power in line through high quality products and superior services.

KEMA-KEUR certification

Dowin announces the successful completion of KEMA-KEUR certification for several Class 1 and 2 surge protection devices.

To learn more about KEMA-KEUR certified DOWIN products, please contact us at +86 755 26859599

Installation and Site Survey

To compliment our surge protection product offering and innovative engineering designs, DOWIN also provides professional support services through site surveys, OEM design, consulting and network installation services throughout China.


Smiths Power

As a family of brands, PDI, Onyx, PolyPhaser, Transtector and DOWIN unite under one umbrella, Smiths Power, to Transform, Distribute, Monitor and Protect™ power in global networks and systems.