Ludwigsburg (dpa/lsw) - The filter manufacturer Mann Hummel is back on track after problems in the corona pandemic. As the company announced on Wednesday in Ludwigsburg, sales in the past financial year, as in 2019, were around 4.2 billion euros. In 2020, revenues had temporarily fallen to 3.8 billion euros. Earnings before interest and taxes (EBIT) recently increased by around 16 percent to 191 million euros. The bottom line was a consolidated result of 17 million euros in 2021, after five million euros in the previous year.