By 1820, the factory became the largest in Tula, producing around 7000 pure copper and copper-zinc alloy samovars. Lomov samovars quickly gained nationwide fame. They were of the highest quality and were among the first to receive permission to wear the state emblem. In 1829, the first manufacturing products exhibition was held in St. Petersburg, where the Lomov brothers received a silver medal for their high-quality samovars.