Cover |
12 Months Ended |
|---|---|
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Dec. 31, 2024
shares
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| Document Information Line Items | |
| Entity Registrant Name | TANTECH HOLDINGS LTD |
| Entity Central Index Key | 0001588084 |
| Document Type | 20-F/A |
| Amendment Flag | true |
| Entity Voluntary Filers | No |
| Current Fiscal Year End Date | --12-31 |
| Entity Well Known Seasoned Issuer | No |
| Entity Shell Company | false |
| Entity Emerging Growth Company | false |
| Entity Current Reporting Status | Yes |
| Document Period End Date | Dec. 31, 2024 |
| Entity Filer Category | Non-accelerated Filer |
| Document Fiscal Period Focus | FY |
| Document Fiscal Year Focus | 2024 |
| Entity Common Stock Shares Outstanding | 1,132,658 |
| Document Annual Report | true |
| Document Transition Report | false |
| Entity File Number | 001-36885 |
| Entity Incorporation State Country Code | D8 |
| Entity Address Address Line 1 | No. 10 Cen Shan Road |
| Entity Address Address Line 2 | Shuige Industrial Zone |
| Entity Address City Or Town | Lishui City |
| Entity Address Country | CN |
| Entity Address Postal Zip Code | 323000 |
| 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,” “we” or “our”) for the fiscal year ended December 31, 2024, originally filed with the U.S. Securities and Exchange Commission (“SEC”) on May 15, 2025 (the “Form 20-F”). This Form 20-F/A is being filed in response to the comment letter dated September 2, 2025 (the “SEC Comment Letter”) from the staff of the SEC and relates to matters discussed in the SEC Comment Letter. Item 3, Key Information, of Part I in the Form 20-F is amended by this Form 20-F/A to include the revised disclosures regarding the risks to our investors related to the Company’s corporate structure and being based in or having the majority of the company’s operations in China. Items 17 and 18, Financial Statements, of Part III are amended by this Form 20-F/A to include a revised Report of Independent Registered Public Accounting Firm, and the Consolidated Financial Statements (the “Financial Statements”) and the revised notes to the Financial Statements in response to the SEC Comments. Item 19 of Part III in the Form 20-F is amended by the filing of new exhibits regarding a promissory note dated August 1, 2024 and related note purchase agreement, CEO and CFO certification, and the auditor’s consent letter in this Form 20-F/A. This Amendment on Form 20-F/A speaks as of the filing date of the Form 20-F on May 15, 2025. Other than as set forth herein, the Form 20-F/A does not, and does not purport to, amend, update or restate any other information or disclosure included in the Form 20-F or reflect any events that have occurred since May 15, 2025. |
| Icfr Auditor Attestation Flag | false |
| Auditor Name | YCM CPA INC. |
| Auditor Location | Irvine, California |
| Auditor Firm Id | 6781 |
| Security 12b Title | Common shares |
| Trading Symbol | TANH |
| Security Exchange Name | NASDAQ |
| Entity Interactive Data Current | Yes |
| Document Shell Company Report | false |
| Document Registration Statement | false |
| Document Accounting Standard | U.S. GAAP |
| Business Contact [Member] | |
| Document Information Line Items | |
| Entity Address Address Line 1 | No. 10 Cen Shan Road |
| Entity Address Address Line 2 | 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 |
| Phone Fax Number Description | 86-578-226-2360 |
| Contact Personnel Email Address | tantech@tantech.cn |
| Contact Personnel Name | Mr. Weilin Zhang |