Tantech Announces Full Year 2022 Financial Results PR Newswire LISHUI, China, May 1, 2023 LISHUI, China , May 1, 2023 /PRNewswire/ -- Tantech Holdings Ltd (NASDAQ: TANH ) ("Tantech" or the "Company"), a clean energy company, today reported its audited financial results for the twelve months ended December 31, 2022. For the year ended December 31, 2022 2021 Change Revenues $ 53,490 55,264 -3.2 % Gross profit 10,093 10,431 -3.2 % Gross Margin 18.9 % 18.9 % 0.0 % Operating expenses 5,520 18,946...