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olivLaw · US equity research

Tantech Holdings Ltd TANH

Industrial Organic Chemicals · SIC 2860 · Vertical: Industrial Organic Chemicals (SIC 2860)

14.50USD−0.96% · 1 dayClose 04 Nov 2026

Tantech Holdings Ltd, known mainly for its bamboo charcoal products sold under the Charcoal Doctor brand, reported continuing-operations revenue of about 38.4 million USD in fiscal 2025, down 10.7% from the prior year. The company is in a restructuring phase, having agreed to sell its electric vehicle division and expanded into construction materials in the United States, so its trajectory is worth following closely.

The AI analysis may be outdated: new filings came after its sources (see the «AI analysis» section).

At the close of 04 Nov 2026, Tantech Holdings Ltd (TANH) stock was 14.50 USD (−0.96% on the day), with market capitalisation 90.1 m USD, beta 0.78, 52-week range 8.81–59.50 USD.

Data as of · AI analysis dated · Source: SEC filings and closing prices, computed by olivLaw.

Market cap
90.1 m USD
shares as of 30 Apr 2026
P/E (TTM)
unavailable
Diluted EPS TTM -13.64 · TTM to 31 Dec 2025
E/P (TTM)
-94.07%
TTM to 31 Dec 2025
Dividend yield
unavailable
Beta (2y)
0.78
Volatility (1y) 182%
52-week range
8.8159.50

Price history

Loading chart…

Technical reading

RSI (14)
49.9
neutral
Bollinger (20, 2)
7.40 – 21.13
in the upper half of the band · %B 0.52 · band width 96.2%
SMA 50 / 200
15.76 / 24.96
downtrend (price < SMA50 < SMA200)
MACD (12, 26, 9)
-0.61 / -0.73
MACD above signal

Indicators describe past prices; on their own they do not predict direction. On our history the RSI ≤ 40 filter added no return (see the signals methodology).

Performance

CompanyS&P 500vs S&P 500Vertical median
1 month+3.4%−1.1%+4.5 pp—
3 months−30.0%−0.5%−29.5 pp—
6 months−20.1%+4.4%−24.5 pp—
Year to date−71.0%+12.3%−83.3 pp—
1 year−77.3%+13.5%−90.9 pp−1.7%
3 years−99.7%+76.4%−176.1 pp−26.4%
5 years−100.0%+63.7%−163.7 pp—
Max drawdown (1y)
−85.2%
28 Nov 2025 → 21 Oct 2026
Max drawdown (5y)
−100.0%
01 Dec 2021 → 21 Oct 2026
Compound annual growth (5y)
−86.6%
S&P 500 +10.4%

Price returns, dividends excluded.

Quarterly results

ESEF annual reports carry no quarters: the results are annual (below).

E/P over time

E/P = trailing-12-month diluted EPS / price at quarter end. E/P is the inverse of P/E and stays defined when earnings are negative.

Fiscal years

Fiscal year20182019202020212022202320242025
Revenue29.6 m49.2 m42.3 m55.3 m53.0 m44.6 m42.9 m38.4 m
Revenue YoY−30.1%+66.5%−14.1%+30.7%−4.2%−15.7%−3.8%−10.7%
Net income2.0 m-6.4 m-6.5 m-8.4 m2.6 m5.6 m-3.2 m-31.0 m
Net income YoY−47.5%−421.6%unavailableunavailableunavailable+115.9%−158.1%unavailable
Diluted EPSunavailable-2.20-52.93-48.35120.1080.69-7.66-13.64
Diluted EPS YoYunavailableunavailableunavailableunavailableunavailable−32.8%−109.5%unavailable
net %6.7%-12.9%-15.4%-15.1%4.9%12.5%-7.5%-80.9%
Free cash flow14.1 m14.6 m14.0 m-8.3 m8.3 m5.3 m5.3 m-5.8 m

Reported results vs expectations

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Balance sheet & financial health

Fiscal year 2025 · 31 Dec 2025

Cash
33.0 m USD
Financial debt
unavailable USD
Net debt
unavailable USD
Equity
110.3 m USD
Total assets
124.0 m USD
Debt / equity
unavailable
Current ratio
6.59x
ROE
-26.0%
ROA
-23.2%
FCF margin
-15.2%

Financial statements (source on every figure)

Revenue and net income (USD)

Margins

Income statement · USD

Revenue
2023
44.6 m
2024
42.9 m
2025
38.4 m

SEC (XBRL)· 14 May 2026verified

Cost of revenue
2023
34.9 m
2024
34.0 m
2025
31.2 m

SEC (XBRL)· 14 May 2026verified

Gross profit
2023
9.7 m
2024
8.9 m
2025
7.1 m

SEC (XBRL)· 14 May 2026verified

Research & development
2023
23.9 k
2024
38.8 k
2025
78.6 k

SEC (XBRL)· 14 May 2026verified

Operating income
2023
3.7 m
2024
4.0 m
2025
-12.2 m

SEC (XBRL)· 14 May 2026verified

Interest expense
2023
301.5 k
2024
290.4 k
2025
279.6 k

SEC (XBRL)· 14 May 2026verified

Pre-tax income
2023
9.3 m
2024
624.3 k
2025
-33.5 m

SEC (XBRL)· 14 May 2026verified

Income tax
2023
2.4 m
2024
3.1 m
2025
-2.5 m

SEC (XBRL)· 14 May 2026verified

Net income
2023
5.6 m
2024
-3.2 m
2025
-31.0 m

SEC (XBRL)· 14 May 2026verified

Diluted EPS
2023
80.69
2024
-7.66
2025
-13.64

SEC (XBRL)· 14 May 2026verified

Weighted average diluted shares
2023
69.2 k
2024
423.2 k
2025
2.3 m

SEC (XBRL)· 14 May 2026verified

Balance sheet · USD

Cash
2023
29.1 m
2024
35.2 m
2025
33.0 m

SEC (XBRL)· 14 May 2026verified

Receivables
2023
—
2024
32.6 m
2025
27.8 m

SEC (XBRL)· 14 May 2026verified

Inventories
2023
236.4 k
2024
191.2 k
2025
152.4 k

SEC (XBRL)· 14 May 2026verified

Current assets
2023
115.7 m
2024
117.8 m
2025
74.0 m

SEC (XBRL)· 14 May 2026verified

Property, plant & equipment, net
2023
25.9 k
2024
123.3 k
2025
102.8 k

SEC (XBRL)· 14 May 2026verified

Intangibles (excl. goodwill)
2023
211.1 k
2024
184.5 k
2025
170.8 k

SEC (XBRL)· 14 May 2026verified

Total assets
2023
141.7 m
2024
143.0 m
2025
124.0 m

SEC (XBRL)· 14 May 2026verified

Accounts payable
2023
851.4 k
2024
358
2025
477.8 k

SEC (XBRL)· 14 May 2026verified

Current liabilities
2023
17.6 m
2024
11.8 m
2025
11.2 m

SEC (XBRL)· 14 May 2026verified

Total liabilities
2023
18.7 m
2024
14.7 m
2025
13.6 m

SEC (XBRL)· 14 May 2026verified

Equity
2023
123.0 m
2024
128.3 m
2025
110.3 m

SEC (XBRL)· 14 May 2026verified

Shares outstanding at year end
2023
3.8 m
2024
1.1 m
2025
—

SEC (XBRL)· 15 May 2025verified

Cash flow · USD

Operating cash flow
2023
5.3 m
2024
5.4 m
2025
-5.8 m

SEC (XBRL)· 14 May 2026verified

Capex
2023
431
2024
80.5 k
2025
0

SEC (XBRL)· 14 May 2026verified

Free cash flow
2023
5.3 m ≈
2024
5.3 m ≈
2025
-5.8 m ≈

SEC (XBRL)· 14 May 2026derived

Investing cash flow
2023
-2.6 m
2024
-3.3 m
2025
-1.1 m

SEC (XBRL)· 14 May 2026verified

Financing cash flow
2023
7.4 m
2024
3.5 m
2025
3.4 m

SEC (XBRL)· 14 May 2026verified

Computed indicators

Growth

Revenue growth (YoY)
-10.7%
computed by olivLawFY 2025
Revenue CAGR 3Y
-10.2%
computed by olivLawFY 2022 → FY 2025
Revenue CAGR 5Y
-1.9%
computed by olivLawFY 2020 → FY 2025
EBIT growth (YoY)
-406.3%
computed by olivLawFY 2025
Net income growth (YoY)
unavailable
the base of the ratio is not positive
Net income CAGR 3Y
unavailable
the base of the ratio is not positive
Net income CAGR 5Y
unavailable
the base of the ratio is not positive
EPS growth (YoY)
unavailable
the base of the ratio is not positive
EPS CAGR 3Y
unavailable
the base of the ratio is not positive
EPS CAGR 5Y
unavailable
the base of the ratio is not positive
FCF growth (YoY)
-210.1%
computed by olivLawFY 2025

Profitability

Gross margin
18.6%
computed by olivLawFY 2025
EBITDA margin
unavailable
input data missing
EBIT margin
-31.8%
computed by olivLawFY 2025
Net margin
-80.9%
computed by olivLawFY 2025
FCF margin
-15.2%
computed by olivLawFY 2025

Returns

ROE
-25.7%
computed by olivLawFY 2025 · balance sheet at 31 Dec 2025
ROA
-23.2%
computed by olivLawFY 2025 · balance sheet at 31 Dec 2025
ROIC
unavailable
input data missing
ROCE
-10.8%
computed by olivLawFY 2025 · balance sheet at 31 Dec 2025
Payout ratio (EPS)
unavailable
input data missing
Payout ratio (FCF)
unavailable
input data missing

Balance sheet

Net debt
unavailable
input data missing
Net debt / EBITDA
unavailable
input data missing
Debt / equity
unavailable
input data missing
Interest coverage
-43.7x
computed by olivLawFY 2025

Liquidity

Current ratio
6.6x
computed by olivLawbalance sheet at 31 Dec 2025
Quick ratio
6.6x
computed by olivLawbalance sheet at 31 Dec 2025
Cash ratio
2.9x
computed by olivLawbalance sheet at 31 Dec 2025

Cash

Operating cash flow
-5.8 m USD
computed by olivLawFY 2025
Capital expenditure
0 USD
computed by olivLawFY 2025
Free cash flow
-5.8 m USD
computed by olivLawFY 2025
FCF conversion
unavailable
insufficient data
Cash conversion
unavailable
input data missing

Efficiency

Days sales outstanding
287 days
computed by olivLawFY 2025 · balance sheet at 31 Dec 2025
Days inventory outstanding
2 days
computed by olivLawFY 2025 · balance sheet at 31 Dec 2025
Days payables outstanding
3 days
computed by olivLawFY 2025 · balance sheet at 31 Dec 2025
Cash conversion cycle
287 days
computed by olivLawFY 2025 · balance sheet at 31 Dec 2025

Market and valuation

Market capitalisation
90.1 m USD
computed by olivLawbalance sheet at 31 Dec 2025
Enterprise value
unavailable
input data missing
Market cap / net income TTM
unavailable
insufficient data
P/E (TTM)
unavailable
insufficient data
Earnings yield
-94.1%
computed by olivLawFY 2025
P/B
0.8x
computed by olivLawbalance sheet at 31 Dec 2025
P/S
2.3x
computed by olivLawFY 2025 · balance sheet at 31 Dec 2025
EV/EBITDA
unavailable
input data missing
EV/EBIT
unavailable
input data missing
EV/Sales
unavailable
input data missing
P/FCF
unavailable
the base of the ratio is not positive
FCF yield
-6.5%
computed by olivLawFY 2025 · balance sheet at 31 Dec 2025
Dividend yield
unavailable
no dividend in the structured statements; a missing line is not a confirmed zero
Shareholder yield (distributions)
unavailable
input data missing

Risk

Altman Z
4.76
computed by olivLawbalance sheet at 31 Dec 2025

Valuation

olivLaw classification

Insufficient data
What is missing
  • indicators available: 5 of at least 6
  • score weight coverage: 33.3% of at least 60%
  • valuation methods computed: 0 of at least 1

A scoring methodology on indicators and valuation, not investment advice.

Closing price

14.50 USD

04 Nov 2026Source: olivLaw, closing series

Market cap: 90.1 m USD

Key indicators

Market capitalisation
90.1 m USD
computed by olivLawbalance sheet at 31 Dec 2025
P/E (TTM)
unavailable
insufficient data
P/B
0.8x
computed by olivLawbalance sheet at 31 Dec 2025
EV/EBITDA
unavailable
input data missing
ROE
-25.7%
computed by olivLawFY 2025 · balance sheet at 31 Dec 2025
Net margin
-80.9%
computed by olivLawFY 2025
Revenue growth (YoY)
-10.7%
computed by olivLawFY 2025
Dividend yield
unavailable
no dividend in the structured statements; a missing line is not a confirmed zero

Coverage and freshness

28/37 reporting lines present
Latest full fiscal year: 2025
Latest reported period: 31 Dec 2025
Latest balance sheet date: 31 Dec 2025
Share count (cover of the latest filing), as of: 30 Apr 2026
Source: SEC (XBRL)published 14 May 2026
verified 379

Score by group

33% · Insufficient data

Estimated value range

unavailable — no valuation method could be computed

Valuation assumptions are editorial choices, not measured; beta is not measured.

Valuation methods

  • DCF (discounted cash flow)unavailable · net debt missing: EV cannot be bridged to equity (missing debt is not zero)
  • Peers: EV/EBITDAunavailable · net debt missing: EV cannot be bridged to equity (missing debt is not zero)
  • Peers: P/Eunavailable · the base of the ratio is not positive
  • Dividend discount (DDM)unavailable · the company pays no dividend: a dividend model needs an explicit initiation assumption

no valuation method could be computed

Multiple comparisons use the SIC vertical: Industrial Organic Chemicals (SIC 2860)

Classification (SIC) comparables group by industry code, not by economic activity; the direct group is an editorial selection by activity. Members' multiples are on their own trailing twelve months, at their own latest close.

Assumptions (illustrative, editorial)

Risk-free rate
4.3%
Equity risk premium
5.0%
Beta (default)
1.00
Cost of equity
9.3%
Terminal growth
2.5%

Factor scorecard

Insufficient data

Minimum-evidence gate: indicators available: 5 of at least 6; score weight coverage: 33.3% of at least 60%; valuation methods computed: 0 of at least 1

FactorValueScoreWeight used
ROIC · Qualityunavailableunavailable—
Net margin · Quality-80.9%11 (vs peers)19%
FCF conversion · Qualityunavailableunavailable—
Revenue CAGR 3Y · Growth-10.2%0 (on a fixed band)25%
EPS CAGR 3Y · Growthunavailableunavailable—
Net debt / EBITDA · Balance sheetunavailableunavailable—
Interest coverage · Balance sheet-43.7x0 (on a fixed band)19%
Current ratio · Balance sheet6.6x100 (on a fixed band)13%
P/E (TTM) · Valuationunavailableunavailable—
EV/EBITDA · Valuationunavailableunavailable—
FCF yield · Valuation-6.5%0 (on a fixed band)25%
Shareholder yield (distributions) · Returnsunavailableunavailable—
Payout ratio (FCF) · Returnsunavailableunavailable—

Factors without a value were dropped; the remaining weights were renormalised.

Score groups

  • Balance sheet40/100 · 2/3 factors with a value
  • Growth· partial0/100 · 1/2 factors with a value
  • Quality· partial11/100 · 1/3 factors with a value
  • Returns· partialunavailable · 0/2 factors with a value
  • Valuation· partial0/100 · 1/3 factors with a value

A «partial» group is computed from under half of its weight or from one factor: it is not a full assessment of the group.

Memo

TANTECH HOLDINGS LTD (TANH). Latest full fiscal year: 2025; data up to 2025-12-31.

Figures computed from the financial statements: revenue 38.4 m USD in 2025; YoY growth -10.7%; net margin -80.9%; ROE -25.7%.

Valuation cannot be computed from the available data.

Insufficient data for a verdict (indicators available: 5 of at least 6; score weight coverage: 33.3% of at least 60%; valuation methods computed: 0 of at least 1).

Text generated deterministically from the figures shown; no language model. Not investment advice.

What supports the thesis

  • Current ratio: 6.6x

What contradicts it

  • Net margin: -80.9%
  • Revenue CAGR 3Y: -10.2%
  • Interest coverage: -43.7x
  • FCF yield: -6.5%

Not assessed (insufficient data or a ratio without meaning): ROIC, FCF conversion, EPS CAGR 3Y, Net debt / EBITDA, P/E (TTM), EV/EBITDA, Shareholder yield (distributions), Payout ratio (FCF).

Versus the vertical median

Industrial Organic Chemicals (SIC 2860) · same industry (4-digit SIC) · compared with 20 companies

Multiples and returns vs the median

P/E
—
vertical median 13.8x
EV/EBITDA
—
vertical median 9.6x
P/S
2.3x
vertical median 1.5x
above median (+60.5%)
P/B
0.8x
vertical median 1.6x
below median (−49.3%)
ROE
-25.7%
vertical median 1.3%
below median (−2,018.7%)
Net margin
-80.9%
vertical median 1.6%
below median (−5,237.8%)
EBIT margin
-31.8%
vertical median -3.2%
below median
Revenue YoY
-10.7%
vertical median -4.9%
below median
Net debt/EBITDA
—
vertical median 1.7x
Dividend yield
—
vertical median 2.5%

Price rebased to 100 (monthly, 5 years)

Companies in the vertical

Market capP/EROENet marginRevenue YoY1A / 3A
IFFInternational Flavors & Fragrances Inc22.0 bn122.11.3%1.6%−5.2%+26% / +16%
LYBLyondellbasell Industries N.V.20.4 bn15.611.9%4.1%−9.7%+29% / −34%
WLKWestlake Corporation8.7 bn—-4.9%-3.9%−8.0%+2% / −47%
NEUNewmarket Corporation6.7 bn14.725.3%16.5%−2.2%−5% / +37%
SXTSensient Technologies Corp5.4 bn31.713.7%9.7%+3.5%+29% / +117%
MEOHMethanex Corporation5.0 bn70.16.4%4.0%−3.5%+83% / +53%
REXRex American Resources Corporation1.3 bn10.522.5%20.9%+1.2%+20% / +62%
GPREGreen Plains Inc.957.5 m8.615.4%6.8%−14.9%+32% / −45%
WLKPWestlake Chemical Partners LP761.8 m12.9—4.8%+2.7%+14% / −5%
GEVOGevo, Inc.316.5 m—-57.0%-119.9%+849.3%−40% / +13%
ALTOAlto Ingredients, Inc.271.5 m5.322.2%5.5%−4.9%+37% / +43%
FFFuturefuel Corp.246.5 m—-18.3%-19.9%−60.7%+70% / −5%
CDXSCodexis, Inc.118.3 m—-69.4%-39.6%+18.6%−38% / −54%
LODEComstock Inc.113.3 m—-38.2%-3,680.5%−48.5%−58% / −68%
AMTXAemetis, Inc90.2 m——-27.4%−26.2%−28% / −72%
TANHTantech Holdings Ltd90.1 m—-25.7%-80.9%−10.7%−77% / −100%
LNZALanzaTech Global, Inc.69.2 m0.4146.4%295.7%+12.6%−63% / −99%
SAFXXcf Global, Inc.41.0 m—-246.1%—unavailable−87% / unavailable
TOMZTomi Environmental Solutions, Inc.18.2 m—-168.8%-49.8%−27.2%−6% / −26%
CNEYCn Energy Group. Inc.2.5 m—-11.2%-31.3%−30.2%−65% / −99%
BAKBraskem SA———-14.6%+9.7%−61% / −86%

1- and 3-year price returns: for TANH from daily closes (the same as the performance table), for the other companies from month-end closes.

olivLaw engine forecast

The world engine ran after the company's latest material disclosure. Probabilities are of TOUCHING a level within the horizon (not closing there) and sit next to the random walk (p_rw), the no-information benchmark.

The engine has no published run for this company yet.

Valuation scenarios (editable assumptions)

Illustrative scenarios

Illustrative: not forecasts and without probabilities. Each case is one coherent set of assumptions, computed on today's figures.

Bear
Allowed range: -50 … 50%
Allowed range: -100 … 100%
Allowed range: 0 … 100
Allowed range: -10 … 20%
Allowed range: 0 … 100%
Base
Allowed range: -50 … 50%
Allowed range: -100 … 100%
Allowed range: 0 … 100
Allowed range: -10 … 20%
Allowed range: 0 … 100%
Bull
Allowed range: -50 … 50%
Allowed range: -100 … 100%
Allowed range: 0 … 100
Allowed range: -10 … 20%
Allowed range: 0 … 100%
Nothing is saved.

Estimated price (USD)

Estimated priceBearBaseBull
1 years
insufficient data
Total return unavailable · Per year unavailable
insufficient data
Total return unavailable · Per year unavailable
insufficient data
Total return unavailable · Per year unavailable
3 years
insufficient data
Total return unavailable · Per year unavailable
insufficient data
Total return unavailable · Per year unavailable
insufficient data
Total return unavailable · Per year unavailable
5 years
insufficient data
Total return unavailable · Per year unavailable
insufficient data
Total return unavailable · Per year unavailable
insufficient data
Total return unavailable · Per year unavailable
What moves the 3-year price the most

    AI analysis

    AI-generatedAI-generated analysis (Claude) from cited public sources; it may contain errors. Not investment advice. As of 27 Oct 2026 · Model: claude-haiku-5-5.

    Possibly outdated: the newest document it read is from 14 May 2026; since then the company filed 6-K (02 Oct 2026), 6-K (24 Sept 2026), 6-K (01 Sept 2026), 6-K (19 Aug 2026), 6-K (06 Aug 2026), 6-K (04 Aug 2026).

    In brief

    Tantech Holdings Ltd, known mainly for its bamboo charcoal products sold under the Charcoal Doctor brand, reported continuing-operations revenue of about 38.4 million USD in fiscal 2025, down 10.7% from the prior year 1. The company is in a restructuring phase, having agreed to sell its electric vehicle division and expanded into construction materials in the United States, so its trajectory is worth following closely.

    SWOT

    Strengths

    • The company has a well-known brand in the bamboo charcoal category, described as one of the largest and most famous in the market 1.
    • The product range is diversified across several consumer categories, from purification to cleaning and barbecue charcoal 1.
    • Presenting the electric vehicle division as a discontinued operation could make the core business performance more transparent 1.

    Weaknesses

    • Revenue fell over the last two years and gross margin narrowed, pointing to pressure on profitability 1.
    • The 2025 operating and net losses were driven largely by impairments and credit-loss allowances rather than only by current operations 1.
    • Concentration on a few large customers and suppliers exposes the company to the loss of an important partner 1.

    Opportunities

    • Development of agricultural products based on bamboo vinegar could open a new market, according to the report 1.
    • The U.S. construction materials business could reduce dependence on the Chinese market if it reaches sufficient scale 1.
    • A recovery in the property market or household consumption could revive sales of cleaning and purification products 1.

    Threats

    • A slowdown in the Chinese economy and lower spending on household goods could reduce demand for the company's products 1.
    • Larger competitors with stronger brands and bigger advertising budgets could gain market share 1.
    • Stricter environmental rules or a temporary shortage of charcoal from local sources could raise costs or limit production 1.

    Risks

    • Dependence on distributorshigh

      Most sales go through third-party distributors, and their performance directly affects the company's revenue 1.

    • Customer concentrationhigh

      A small number of customers generate a significant part of sales, and losing one could seriously affect results 1.

    • Raw material costsmedium

      Bamboo raw material has inelastic pricing, and supply disruptions could raise costs or limit growth 1.

    • Unsuccessful expansionsmedium

      New business lines, including packaging and U.S. construction materials, may not become profitable if they fail to reach the necessary scale 1.

    • Uninsured PRC bank depositslow

      Bank accounts in China are not insured, so a problem at a bank could lead to losing funds deposited there 1.

    Investment thesis

    What would need to be true (bull case)

    • The Charcoal Doctor brand is described as one of the best-known in its category, which could support a sales recovery if household demand improves 1.
    • Exiting electric vehicles and focusing on clearer business lines could make the company easier to evaluate and manage 1.
    • If the U.S. construction materials activity grows, it could become a revenue source independent of the Chinese market 1.

    What would break the thesis

    • Revenue and margins have declined steadily, and the 2025 net loss shows that pressure on results could continue 1.
    • Dependence on a few large customers and suppliers could expose the company to major shocks if a key relationship deteriorates 1.
    • Several diversification initiatives were halted or scaled back, which could suggest difficulty finding new sources of growth 1.

    What to watch

    • Sales trends by product category, especially cleaning and purification productsQ1 2027
    • Results and growth pace of the U.S. construction materials business2027
    • Share of large customers and suppliers in total sales and purchasesnext 10-K
    • Completion of the electric vehicle division sale and its effect on the financial position2027

    Products, market & competition

    AI-generatedAI-generated analysis (Claude) from cited public sources; it may contain errors. Not investment advice. As of 27 Oct 2026 · Model: claude-haiku-5-5.

    Possibly outdated: the newest document it read is from 14 May 2026; since then the company filed 6-K (02 Oct 2026), 6-K (24 Sept 2026), 6-K (01 Sept 2026), 6-K (19 Aug 2026), 6-K (06 Aug 2026), 6-K (04 Aug 2026).

    The business

    Tantech Holdings Ltd is a British Virgin Islands holding company that, through its subsidiaries, researches, produces and distributes various bamboo-based products and invests in mining exploration 1. Historically it specialized in bamboo charcoal products, focusing on consumer goods and low-emission barbecue charcoal, and after several reorganizations it now also engages in vehicles and trading of bamboo charcoal products 1. The shares have been listed on Nasdaq since 2015, and in 2025 the board approved the sale of the electric vehicle business, which is treated as a discontinued operation 1.

    The group carried out numerous reorganizations, including the 2017 transfer of its EDLC carbon business and the 2017 acquisition of a controlling stake in Shangchi Automobile, followed by closures and disposals of several subsidiaries between 2018 and 2025 1. From 2022 it launched new lines such as biodegradable packaging and commercial factoring, but according to the report these operations slowed or halted in 2025 1. In 2025 its U.S. subsidiaries began trading in construction materials 1.

    The legal and operational structure has changed repeatedly, which makes direct year-on-year comparisons difficult 1. The report presents continuing and discontinued operations separately, and the total net loss for fiscal 2025 was heavily influenced by impairments and allowances for credit losses 1.

    Segments

    Charcoal Doctor consumer products

    The largest segment includes purification and deodorization products as well as household cleaning products, all sold under the Charcoal Doctor brand 1. Purification products, which absorb harmful substances and odors, make up the largest category, while cleaning products are a newer segment seen as a possible growth source 1. Demand has been hit, according to the report, by the persistently sluggish Chinese real estate market 1.

    Barbecue charcoal and biodegradable packaging

    Barbecue charcoal sold on China's domestic market, purchased from third parties and distributed through the company's channels, has been an important revenue source in recent years 1. Biodegradable packaging generated only nonsignificant revenue in fiscal 2024 and 2023, and its activity was reduced or halted in 2025 1.

    Market context

    The report describes the bamboo charcoal-based consumer market as fragmented with relatively low barriers to entry, many competitors offering functionally similar products without bamboo components 1. A significant part of demand depends on Chinese household consumption, which has slowed in recent years, a factor that could limit growth in the segment 1.

    Reliance on third-party distributors and a few large customers means that local market conditions have a direct effect on revenue 1. Weak demand from the real estate sector, especially for cleaning products, was described as weak in both years analysed, which could keep pressure on sales 1.

    Trends

    • Slowing household consumptionheadwind

      The report links demand for household products to consumer spending in China, which has slowed in recent years 1. If this slowdown continues, Charcoal Doctor sales could remain under pressure 1.

    • Sluggish real estate marketheadwind

      The drop in demand for cleaning products was directly attributed to a persistently slow property market, which affected revenue in fiscal 2024 and 2025 1. A recovery in this sector could support sales, but the report gives no timing estimate 1.

    • Diversification into construction materialsmixed

      U.S. subsidiaries trading in sustainable construction materials began operations in 2025, a new direction for the group 1. If this segment develops it could reduce dependence on the Chinese market, but it involves costs and competition from established providers 1.

    • Exit from electric vehiclesmixed

      In April 2025 the board approved the sale of the electric vehicle division, whose results are reported as a discontinued operation 1. The exit simplifies the portfolio but removes a business line that had previously been a strategic component 1.

    Competitive position

    In consumer products, Charcoal Doctor competes with charcoal-based producers such as Zhejiang Maitanweng Ecological Development and Zhejiang Jiejiegao Charcoal Industry, and with chemical-based companies such as SC Johnson and Blue Moon 1. The report notes that its two largest competitors are substantially larger and have stronger brand recognition 1.

    In barbecue charcoal and briquettes, competition comes from numerous small producers that can offer similar products at lower prices 1. This pressure could reduce margins, since customers are price-sensitive 1.

    • Guangzhou Blue Moon Industry Co., Ltd

      Maker of the Blue Moon brand, described in the report as substantially larger than Charcoal Doctor with higher customer recognition.

    • Shanghai SC Johnson Wax Co., Ltd

      Maker of the Mr. Muscle brand, an important competitor in cleaning products that does not rely on charcoal.

    • Zhejiang Maitanweng Ecological Development Co., Ltd

      Charcoal-based competitor in air purification products, named in the annual report.

    • Zhejiang Jiejiegao Charcoal Industry Co., Ltd

      Charcoal-based competitor in purification products, cited among the company's direct rivals.

    News & filings

    Sources

    1. [1] Form 20-F, fiscal year ended 2025-12-31 · SEC / Tantech Holdings Ltd · 14 May 2026

    Figures computed by olivLaw from SEC filings and closing prices; the qualitative analysis is AI-generated from cited sources. Not investment advice.