Tendaire Industries Inc.

Tendaire Industries and Electrol Equipment, Inc. began operations in 1961 in Mankato, Minnesota. In 1987, Tendaire/Electrol expanded part of the manufacturing operations to Beresford, South Dakota. In 1991, Tendaire moved the corporate headquarters from Mankato to Beresford. Tendaire manufactures the Electrol Equipment line of products in Beresford and continues to market their products under both the Tendaire and Electrol names.