sentences:  In May of that year, the new packaging system was presented to the press, and in 1952, the first filling machine producing 100 ml cream tetrahedrons was delivered to Lundaortens Mejeriförening, a local dairy.In subsequent years, tetrahedron packages became more and more common in Swedish grocery stores, and in 1954, the first machine producing 500 ml milk packages was sold to a Stockholm dairy.That same year the first machine was exported to Hamburg, Germany, soon to be followed by France (1954), Italy (1956), Switzerland (1957) and later the Soviet Union (1959) and Japan (1962).