Complex sentence: In the 1920s, the company moved to Karlsruher Straße in Berlin, and by the 1930s, the business model focused more on putting high-end bodies onto frames from German and other manufacturers.
Split into simpler sentences: In the 1920s, the company moved to Karlsruher Straße in Berlin. By the 1930s, the business model focused more on putting high-end bodies onto frames from German and other manufacturers.