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Tantech Received Notification of Deficiency from Nasdaq Related to not timely Filing of Annual Report Form 20-F

LISHUI, China, May 19, 2022 /PRNewswire/ -- Tantech Holdings Ltd (NASDAQ:TANH) ("Tantech" or the "Company"), a clean energy company, today announced it has received a notice of non-compliance from Nasdaq Stock Market LLC ("Nasdaq") on May 18, 2022 stati