LISHUI, China, March 24, 2023 /PRNewswire/ -- Tantech Holdings Ltd (NASDAQ: TANH) ("Tantech" or the "Company"), a clean energy company in China, today announced that it has closed a private placement transaction, in which the Company sold to individual purchasers an aggregate of 1,000,000 common shares, par value $0.24 per share (the "Shares"), at a price of $2.8 per...