Since 1960, Lanzen, Inc. has been supplying the defense, transportation and many other diverse industries with quality metal fabricated components and assemblies. Our innovative engineering, program management and unique combination of production systems has led to our long term growth and success. Lanzen's two Michigan manufacturing facilities, in Roseville and Mancelona, are well equipped to meet the high standards of quality that our customers have come to expect. We invite you to get acquainted with our capabilities by browsing the pages of our various departments, which are listed below. As a supplier to the U.S. Military, Lanzen has produced thousands of different defense related components and assemblies.