Dyntest, a Grassau, Germany-based manufacturer of scriber/breaker systems for compound semiconductor, optical, laser and thin silicon applications, has appointed Mözak Systems Inc. of Red Wing, Minn., as its sales and service representative for Asia and North America. Mözak, whose headquarters houses sales, market-ing, engineering, manufacturing, and research and development, produces automated process cleaning equipment, rework tools and scriber/breakers for the optical, microelectromechanical systems, medical device and semiconductor industries.