NA, Nano Labs Ltd

Will it survive?

• Can it pay its interest? 4.2×
  Adequate
  Operating income CN¥71M ÷ interest expense CN¥17M
  What this means

  Comfortable in a normal year, but below the margin of safety Graham looked for. Worth checking how stable the coverage has been across a full cycle.

• How heavy is the debt, net of cash? CN¥143M · 2.0× operating profit
  Meaningful net debt
  Cash CN¥9M + ST investments CN¥26M − debt CN¥178M
  What this means

  Netting CN¥35M of cash and short-term investments against CN¥178M of debt leaves CN¥143M owed, about 2.0× a year's operating profit (2.5× on the gross debt, before the cash). Net debt is the leverage figure that matters: the cash is already set against the debt. Strategic or illiquid investments aren't counted here.

• How long is cash tied up? -28d
  Negative, funded by others
  DSO 4 + DIO 75 − DPO 106 days
  What this means

  Days cash is tied up between paying suppliers and collecting from customers. A negative cycle is a quiet moat: suppliers and customers fund the operation (Buffett's “float”), the company grows on other people's money.

Is it a good business?

• Return on invested capital -24%
  Below average through the cycle
  4-yr median, range -339%–22%; 8% latest = NOPAT CN¥71M ÷ invested capital CN¥918M
  Industry peers: median -23%
  What this means

  The rate the business earns on the money tied up in it, Buffett's north star, because over time a stock tracks the ROIC beneath it. Above ~15% sustained hints at a moat; a return below the cost of capital (~8%) erodes value as a business grows rather than building it — the test Buffett weighs most. The headline is the median of the last 4 years (it ran 8% most recently), so one peak or trough year doesn't set the verdict. Asset-light businesses (R&D expensed, little capital) read artificially high, pair this with Owner Earnings.

• Owner-earnings margin -305%
  Consumes cash through the cycle
  6-yr median margin, range -433%–160%; latest (CN¥108M) = operating cash (CN¥108M) − maintenance capex CN¥46K
  Industry peers: median -10%
  What this means

  What an owner could take out without starving the business: operating cash less the maintenance capital it must spend to hold its position — Buffett's owner earnings. That's -401% of revenue this year, a -305% median across 6 years.

• Are earnings backed by cash? -0.86×
  Thinly cash-backed
  Cash from ops (CN¥108M) ÷ net income CN¥126M

  In the filing’s words The filing discloses a material weakness in its financial controls — the reported numbers here, and the record built on them, are only as reliable as the controls that produced them.

  What this means

  How much of reported profit showed up as operating cash. Above 1× is reassuring; well below suggests earnings lean on accruals. One year is noisy, growth and working-capital swings distort it, and this is operating cash, not free cash. Watch the multi-year trend.

How is the cash used?

• Where do the earnings go? —
  No surplus to allocate
  What this means

  The business didn't generate positive Owner Earnings this year, so any distributions came from the balance sheet or borrowing, not from operations.

• Investing or harvesting? 0.01×
  Harvesting
  Capex CN¥46K ÷ depreciation CN¥5M
  What this means

  Descriptive, not a grade. Above ~1× means investing faster than assets wear out (growth, or, sustained for years, today's earnings carrying less depreciation than tomorrow's will). Below means spending less than it's wearing out (efficiency, or a melting asset base). The ratio won't tell you which; the filings will.

Graham’s defensive tests · 2 of 4 met

Graham’s numerical criteria for the defensive investor (The Intelligent Investor, ch. 14), run on the filings. A floor of safety, not a buy signal; many fine modern businesses fail his strictest liquidity rules by design.

• Adequate size —
  Revenue ≥ $2B (a dollar floor) · CN¥27M
  What this means

  Big enough to weather a storm. Graham's floor is a dollar figure — about $2B of revenue as a conservative modern stand-in. This company reports in its home currency and we carry no exchange rate, so we show the figure and leave the size bar for you to apply rather than convert it with a number we don't have.

• Strong liquidity Pass
  Current ratio ≥ 2× · 2.09×
  What this means

  Current assets at least twice current liabilities, near-term bills covered without touching the business. Strict by design: many cash-rich modern firms run leaner and miss it, holding their cushion in longer-dated securities.

• Conservative debt Pass
  Debt ≤ working capital · CN¥178M vs CN¥225M WC
  What this means

  Graham's rule that borrowings not exceed net current assets. Capital-heavy and buyback-heavy firms routinely fail it, read it next to interest coverage, not alone.

• Earnings stability Miss
  A profit every year (6-yr record) · 4 loss years
  What this means

  Graham wanted earnings in each of the past ten years, the stability a defensive owner leans on.

• Dividend record Miss
  Uninterrupted dividends · none paid
  What this means

  An unbroken dividend was Graham's mark of durability. He wanted twenty years; the filings show about ten, and a single suspension breaks the streak. Non-payers, many fine modern compounders, fall outside his defensive net by design.

• Earnings growth —
  Earnings +33% over the record · —
  What this means

  Earnings were negative early in the record, a growth rate isn't meaningful.

• Moderate price —
  P/E ≤ 15 and P/E × P/B ≤ 22.5 · decided by the price
  What this means

  Graham's valuation gate, the wall he kept between a sound business and a sound investment. Three-year average earnings are CN¥-4.16/share (latest year CN¥6.34), the averaged base the calculator's gate runs on, and book value is CN¥37.67/share. Enter a price in “What the price implies” just below for the P/E, P/B, and whether it clears. But this is the rule Buffett outgrew: there's no hard P/E law, and a wonderful business can deserve a far richer multiple if the thesis holds, treat it as the bargain-hunter's floor, not a verdict on the price.

Durability & moat, 2020–2025

Whether the record’s returns held, and what the capital reinvested earned.

• Profitable years 2 of 6
  What this means

  Lost money in 4 year(s), look at what happened there before trusting the average.

• Return on capital ≥ 15% 1 of 4 yrs
  What this means

  A moat shows up as a high return on invested capital that holds year after year, not one good vintage.

• Operating margin −729% → −117% (3-yr avg ends)
  What this means

  Through the cycle the operating margin widened — about −729% early to −117% lately, median −333% — pricing power intact or improving.

• Reinvestment, incremental ROIC −11%
  What this means

  Reinvested capital came back at a negative incremental return over this window — the invested base grew while operating profit did not. The filings show where it went.

• Worst year 2020 · −1735.9% op. margin
  What this means

  Operations went underwater in 2020, understand why before trusting the good years.