Surfilter Network Technology Co (300311) Fair Value & Analysis
Technology · CN · Market cap 3.5B CNY
Fair value as of: Jul 9, 2026
From 25 valuation models · updated 32 days ago
Fair value updated Jul 9, 2026, revised from ¥0.8100 to ¥0.6800 (−16.0%) since Jun 24, 2026. Share price +24.1% over the past month.
A solid business, but screening 90% overvalued on our models.
What matters now
- The price sits above even our optimistic bull case (¥0.8500). The favourable scenario is already priced in.
- Solid but not exceptional quality (67/100) and above fair value, neither a clear bargain nor a standout compounder.
Price vs Fair Value (5 years)
White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Jul 9, 2026.
How to read this chart
60‑month range ¥2.90 – ¥12.40 · fair‑value band ¥0.5100 – ¥0.8500 · the ¥6.69 price screens above the ¥0.6800 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Jul 9, 2026.
Analysis
Surfilter Network Technology Co (300311) currently trades at ¥6.69, while our model-based Fair Value estimate is ¥0.6800, implying the stock looks roughly 89.8% overvalued today. The Quality Score stands at 67/100 (solid quality), in the Technology sector. Bear case: priced above our estimate, the market already discounts strong expectations. Bull case: above-average quality can justify a premium, the entry price still matters most (evidence: medium).
Over the trailing twelve months, Surfilter Network Technology Co generated revenue of 490M CNY at a net margin of 7.1%. Revenue grew 2.0% year over year. It earns a return on equity of 3.8%. Net debt stands at 2.9M CNY. Fundamentals as of Jul 9, 2026
Our scenario range runs from ¥0.5100 (bear case) to ¥0.8500 (bull case); at ¥6.69, the current price sits above 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 14% below its 52-week high and 60% above its 52-week low, currently above its 200-day average. For context, the median of 10 Technology peers we cover trades at -61% fair-value upside, at -90%, 300311 screens richer 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 25 models by family
Widest divergence: Economic Profit (¥0.7000) versus Dividend Discount (¥0.0200). Highest evidence: Growth DCF (80).
Key figures & financial health
More key figures
Figures from reported company fundamentals · as of Jul 9, 2026. TTM = trailing twelve months.
Quality Score breakdown
Of which business quality 65 · Market factors (momentum, volatility) 71
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
Surfilter Network Technology Co., Ltd. provides network information security solutions in China and internationally. The company offers network security protection product, such as zero trust, data, and border security; security perception; secure access; and security audit.
Full company description
Surfilter Network Technology Co., Ltd. provides network information security solutions in China and internationally. The company offers network security protection product, such as zero trust, data, and border security; security perception; secure access; and security audit. It also provides government regulated product, including critical infrastructure security supervision, important information system security supervision, wireless internet information security system, internet financial fraud prevention and combat, and internet content security supervision, as well as prevent and crack down on the black industry on the internet. In addition, the company offers network security level, network security attack ad defense drills, cloud security, video network security, and security operation management solutions. It serves enterprises, institutions, medical care, education, finance, operators, and other customers. The company was founded in 2000 and is headquartered in Shenzhen, China.
Company description, as reported by the company or data provider.
Revenue & earnings trend
FY2021 – FY2025 · reported fiscal years
Surfilter Network Technology Co reported revenue of ¥489M in FY2025 versus ¥695M in FY2021, a compound −8.4%/yr. Reported net income was ¥23.0M in FY2025.
300311 screens 90% overvalued. Compare with Cisco Systems, Inc →
Peer Group
Communication Equipment · 290 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 Communication Equipment 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.
VALUE 0: the price sits above our fair-value range.
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 Communication Equipment stocks, each showing price versus our Fair Value estimate (as of Jul 9, 2026).
| Stock | Price | Fair Value | vs Fair Value |
|---|---|---|---|
| Cisco Systems, Inc CSCO | $119.25 | $43.05 | -64% |
| Zhongji Innolight Co 300308 | ¥1,094 | ¥171.09 | -84% |
| Foxconn Industrial Internet Co 601138 | ¥56.50 | ¥28.65 | -49% |
| Eoptolink Technology Inc 300502 | ¥482.88 | ¥155.05 | -68% |
| Nokia Oyj NOK | $11.25 | $2.67 | -76% |
| Motorola Solutions, Inc MSI | $413.31 | $190.43 | -54% |
| Suzhou TFC Optical Communication Co 300394 | ¥244.13 | ¥32.04 | -87% |
| Telefonaktiebolaget LM Ericsson (publ), ERIC | $11.72 | $15.96 | +36% |
| Accton Technology Corporation 2345 | 2,090 TWD | 846.28 TWD | -60% |
| ZTE Corporation 000063 | ¥40.00 | ¥15.75 | -61% |
Compare Surfilter Network Technology Co with another stock
Price, fair value, quality and upside side by side.
Explore undervalued stocks
More undervalued Technology stocks →
Frequently asked questions
Is Surfilter Network Technology Co (300311) overvalued or undervalued?
What is the fair value of 300311?
What is the quality score of 300311?
What is the revenue of Surfilter Network Technology Co (300311)?
What is the net profit margin of 300311?
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.
Track Surfilter Network Technology Co and try Pro for 14 days
One email gets you 14 days of full Pro (review alerts, the 35,000+ stock screener, the diversification check) plus the monthly Top-25 report of the most undervalued quality stocks. No card, cancel anytime.
Zero risk: nothing is ever charged. After 14 days you decide whether to stay.