By SquaredTown on March 25, 2026
LISHUI, China, March 25, 2026 /PRNewswire/ -- Tantech Holdings Ltd (NASDAQ: TANH) (the "Company" or "Tantech"), today announced that its U.S. subsidiary, Tanhome Group Inc., has received a Notice of Allowance (NOA) from the United States Patent and Trademark Office (USPTO) for a Hanging...