Clean & Science co., Ltd (045520) Fair Value & Analysis
Industrials · KR · Market cap 17.7B KRW
Fair value as of: Jul 20, 2026
From 12 valuation models · updated 21 days ago
Fair value updated Jul 20, 2026, revised from 3,524 KRW to 3,580 KRW (+1.6%) since Jul 6, 2026. Share price −1.6% over the past month.
Below-average quality, screening 19% undervalued on our models.
What matters now
- A fairly wide model range (1,964 KRW to 3,580 KRW) leaves room in how you read the outcome.
- Our model range runs from 1,964 KRW (bear) to 3,580 KRW (bull), base 3,580 KRW. The closer the price sits to the lower half, the larger the margin of safety.
- Quality 49/100 (below-average quality) with medium evidence: read the verdict with care.
Price vs Fair Value (5 years)
White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Jul 20, 2026.
How to read this chart
60‑month range 2,170 KRW – 29,300 KRW · fair‑value band 1,964 KRW – 3,580 KRW · the 3,020 KRW price screens below the 3,580 KRW fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Jul 20, 2026.
Analysis
Clean & Science co., Ltd (045520) currently trades at 3,020 KRW, while our model-based Fair Value estimate is 3,580 KRW, implying the stock looks roughly 18.6% undervalued today. The Quality Score stands at 49/100 (below-average quality), in the Industrials sector. Bull case: trading below our estimate, it may offer upside if the fundamentals hold. Bear case: a low price can be a value trap when quality is weak or the data is thin (evidence: medium), always confirm before acting.
Over the trailing twelve months, Clean & Science co., Ltd generated revenue of 84.6B KRW at a net margin of -3.6%. Revenue declined 5.6% year over year. It earns a return on equity of -15.7%. Net debt stands at 39.6B KRW. Fundamentals as of Jul 20, 2026
Our scenario range runs from 1,964 KRW (bear case) to 3,580 KRW (bull case); at 3,020 KRW, the current price sits within that range. Bear and bull are the same models run on conservative and optimistic assumptions (margins, growth, valuation multiples), so a plausible valuation range, not a price target. The share trades about 34% below its 52-week high and 43% above its 52-week low, currently below its 200-day average. For context, the median of 10 Industrials peers we cover trades at -48% fair-value upside, at 19%, 045520 screens cheaper than that median.
Fair Value models
Each model estimates fair value its own way; the Fair Value above is the evidence-weighted blend. Evidence (0–100) measures how completely this model’s inputs are available: well-fed models carry more weight in the blend. The spread across models is intentional, each one stresses a different value driver; dividend models, for instance, come out structurally low when payout is small.
All 12 models by family
Widest divergence: DCF Models (3,302 KRW) versus Dividend Discount (1,840 KRW). Highest evidence: Growth DCF (80).
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Key figures & financial health
More key figures
Figures from reported company fundamentals · as of Jul 20, 2026. TTM = trailing twelve months.
Quality Score breakdown
Of which business quality 46 · Market factors (momentum, volatility) 27
Non-valuation factor families (profitability, growth, cashflow, financial strength, momentum …), each academically grounded. Valuation itself sits in the Fair Value and is deliberately excluded here to avoid double-counting.
About the company
Clean & Science co., Ltd provides materials and filtration products in South Korea. The company offers filter products, such as home appliance filters, automobile cabin filters, air conditioning filter, and gas turbine filter; automotive filter papers, industrial filter papers, and specialty filter paper; melt blown products, including air purifiers, air …
Full company description
Clean & Science co., Ltd provides materials and filtration products in South Korea. The company offers filter products, such as home appliance filters, automobile cabin filters, air conditioning filter, and gas turbine filter; automotive filter papers, industrial filter papers, and specialty filter paper; melt blown products, including air purifiers, air conditioning, vacuum cleaners, water treatments, masks, and cabin air products. It also provides electrostatic nonwoven products for masks and cabin air; carbon media comprising air purifiers, cabin air, and air conditioning; and management consulting. The company was formerly known as Jeonil Yeoji Co., Ltd. and changed its name to Clean & Science co., Ltd in July 2000. Clean & Science co., Ltd was founded in 1973 and is headquartered in Seoul, South Korea.
Company description, as reported by the company or data provider.
Revenue & earnings trend
FY2021 – FY2025 · reported fiscal years
Clean & Science co., Ltd reported revenue of 86.1B KRW in FY2025 versus 122B KRW in FY2021, a compound −8.3%/yr. Reported net income was −3.4B KRW in FY2025.
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Peer Group
Specialty Industrial Machinery · 808 stocks
How this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.
Valuation Multiples vs Specialty Industrial Machinery median · lower = cheaper
Snowflake
Five quick dimensions, each 0 to 100: VALUE (fair-value potential), FUTURE (revenue growth), PAST (return on equity), HEALTH (low debt), DIVIDEND (yield). Green = this stock, grey = typical sector peer.
Values & ESG
Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.
ESG scores are not available for this stock yet. Values and ESG data are contextual and can differ between providers.
Similar stocks
10 more Specialty Industrial Machinery stocks, each showing price versus our Fair Value estimate (as of Jul 20, 2026).
| Stock | Price | Fair Value | vs Fair Value |
|---|---|---|---|
| GE Vernova Inc 1GEV | €887.60 | €186.93 | -79% |
| 1SIE 1SIE | €273.20 | €91.93 | -66% |
| SMNS SMNS | C$31.76 | C$22.68 | -29% |
| Eaton Corporation ETN | $407.28 | $171.92 | -58% |
| Atlas Copco AB ATCOA | kr 195.15 | kr 112.59 | -42% |
| Sandvik AB SAND | kr 384.10 | kr 193.01 | -50% |
| Doosan Enerbility Co 034020 | 76,400 KRW | 7,938 KRW | -90% |
| Vestas Wind Systems A/S VWS | kr 178.10 | kr 124.54 | -30% |
| Zhejiang Sanhua Intelligent Controls Co 002050 | ¥43.20 | ¥22.68 | -48% |
| NARI Technology Co 600406 | ¥22.19 | ¥18.71 | -16% |
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How we calculate Fair Value
Each company is valued through a stack of independent intrinsic-value models (DCF variants, residual-income, multiples and more), blended into one family-balanced consensus and weighted by how much trustworthy data backs it. A separate quality layer scores the fundamentals. Every input is real reported data, nothing guessed.
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