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Document and Entity Information
 12 Months Ended
Dec. 31, 2021
shares
Document and Entity Information  
Document Type 20-F/A
Document Registration Statement false
Document Annual Report true
Document Period End Date Dec. 31, 2021
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-36885
Entity Registrant Name TANTECH HOLDINGS LTD
Entity Incorporation, State or Country Code D8
Entity Address, Address Line One No. 10 Cen Shan Road, Shuige Industrial Zone
Entity Address, City or Town Lishui City
Entity Address, Country CN
Entity Address, Postal Zip Code 323000
Title of 12(b) Security Common shares
Trading Symbol TANH
Security Exchange Name NASDAQ
Entity Common Stock, Shares Outstanding 6,399,460
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Emerging Growth Company false
Entity Shell Company false
Document Accounting Standard U.S. GAAP
Entity Central Index Key 0001588084
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2021
Document Fiscal Period Focus FY
Amendment Flag true
Amendment Description This Amendment No. 1 on Form 20-F/A (the “Form 20-F/A”) amends the annual report on Form 20-F of Tantech Holdings Ltd (the “Company”) for the fiscal year ended December 31, 2021, originally filed with the U.S. Securities and Exchange Commission (“SEC”) on July 18, 2022 (the “Form 20-F”). This Form 20-F/A is being filed in response to comment letters dated September 12, 2022 and November 10, 2022 (collectively, the “SEC Comment Letter”) received from the staff of the SEC and relates to matters discussed in the SEC Comment Letter and in the Company’s responses dated October 12, 2022 and November 28, 2022.  Item 3 of Part I, Item 15 of Part II, and Items 17, 18 and 19 of Part III in the Form 20-F are amended by this Form 20-F/A to reflect additional information and revised disclosure requested in the SEC Comment Letter regarding Our Corporate Structure and the Operations of our PRC Subsidiaries, Permissions Required from the PRC Authorities for Our Operations, Cash Flows through our Organization and Selected Consolidating Financial Schedule in Item 3, Key Information, of Part I, and Changes in Internal Control over Financial Reporting in Item 15, Controls and Procedures, of Part II. And Items 17 and 18, Financial Statements, of Part III in the Form 20-F are amended by this Form 20-F/A to include a revised Report of Independent Registered Public Accounting Firm and a revised Note 3 to the Consolidated Financial Statements. Item 19 of Part III in the Form 20-F is amended by the filing of new exhibits regarding CEO and CFO certification and the auditor’s consent letter in this Form 20-F/A.
Auditor Name YCM CPA, Inc
Auditor Firm ID 6781
Auditor Location Irvine, California
Business Contact  
Document and Entity Information  
Contact Personnel Name Mr. Weilin Zhang
Entity Address, Address Line One No. 10 Cen Shan Road, Shuige Industrial Zone
Entity Address, City or Town Lishui City
Entity Address, Country CN
Entity Address, Postal Zip Code 323000
City Area Code 86
Local Phone Number 578-226-2305
Contact Personnel Fax Number 86-578-226-2360
Contact Personnel Email Address tantech@tantech.cn