The origins of Sediver date back to 1898. The first glass insulators were manufactured in 1929 by a specially incorporated company, Electro Verre.
In 1947, the application of the thermal toughening process to glass insulators resulted in a product offering exceptional performance, enabling the company to achieve international success.

Automated production lines were introduced ten years later, in 1957. This was followed in 1959 by the merger of Electro Verre and Charbonneux, which led to the creation of Sediver.
Having established itself in the French insulator market, the 1960s saw the company embark on its first international joint ventures.

New products were launched during the 1970s, including a full range of composite insulators. Its Brazilian subsidiary, Electrovidro, was set up during this period.

The establishment of two joint ventures in China took place in 1993: Sediver Zigong, specialising in the assembly of glass insulators, and the Safam Zigong foundry.