King Technology, a maker of mineral water treatment products based in Hopkins, Minn., announced the promotion of Randy Roseth from COO to president. Roseth was key in strengthening the value of the firm’s FROG brand and has led the development of several new product and channel initiatives.

Additionally, Andy Johnson has joined the firm as director of sales, responsible for all global sales activities. His 15-plus years of experience include leading regional and national selling teams for Fortune 500 companies, including Black & Decker, Novartis, and Bausch & Lomb.