TANTECH HOLDINGS LTD Impairment of Intangible Assets, Finite-lived
TANTECH HOLDINGS LTD (TANH) reported Impairment of Intangible Assets, Finite-lived of $0 for the 6-month period ending 2020-06-30, per its 6-K filed 2020-09-30.
Discontinued › Expense Statement › Operating Expenses
us-gaap:ImpairmentOfIntangibleAssetsFinitelived · last filed 2020-09-30
| Period end | Impairment of Intangible Assets, Finite-lived 6 month | Impairment of Intangible Assets, Finite-lived 12 month |
|---|---|---|
| 2020-06-30 | $0.00 6-K · filed 2020-09-30 | |
| 2019-06-30 | $0.00 6-K · filed 2020-09-30 | |
| 2018-12-31 | $0.00 20-F · filed 2020-06-30 | |
| 2017-12-31 | $0.00 20-F · filed 2020-06-30 |