In 1917, the business was restructured as a limited company, and renamed "Aaltosen Kenkätehdas Osakeyhtiö". The operation employed one third of all shoe manufacturing staff in the country at the time. The business continued to grow, acquiring competitors and setting up supply chain operations in leather production and shoe colour manufacturing. The company was awarded Gold Medal at the 1929 Barcelona International Exposition, and by the end of the 1930s its product range covered 4,500 models and the operation employed over 1,300 staff. It was the largest shoe manufacturing business of its day in the Nordics.