SAI / Skandinavisk Aero Industri
The company's aeroplanes were labelled "KZ" for Kramme and Zeuthen, the first being the KZ I from 1937. The KZ IV was built as an ambulance plane for Zone-Redningskorpset and introduced in 1944. Post-war sales never reached the company's expectations, and production turned unprofitable in the early 1950s, driving the company to shutdown. In mid-1950s turned increasingly to repair and maintenance of military aircraft, and aircraft production had ended by late 1950s. In total, about 200 planes were built by the company.
A number of the KZ planes have been preserved. As of 2005, Dansk Veteranflysamling (The Danish Collection of Vintage Aircraft) exhibits a specimen of each of the 11 aircraft models manufactured by the company.