Sunflex Technology (ROCO:3390) GF Score: 63/100 (As of Jul. 17, 2026) — 18% Below Median

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Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
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Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

ROCO:3390 Sunflex Technology Corp ROCO:3390
63 GF Score
Price NT$26.10
GF Value NT$19.93
Valuation Significantly Overvalued
! 5 Warning Signs
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What is Sunflex Technology GF Score?

Sunflex Technology ROCO:3390 63 GF Score is 63 as of Jul. 17, 2026, which is 18% below its 10-year median of 77.00. GuruFocus rates ROCO:3390 with a GF Score™ of 63/100 and a GF Value™ of NT$19.93 (Significantly Overvalued). The stock has 5 warning signs investors should review.

Sunflex Technology has the GF Score of 63, which implies that the company might have Poor future performance potential.

The GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation, which has been found to be closely correlated to the long-term performances of stocks by backtesting from 2006 to 2021. The stocks with a higher GF Score generally generate higher returns than those with lower GF Scores. Therefore, when picking stocks, investors should invest in companies with high GF Scores. The GF Score ranges from 0 to 100, with 100 as the highest rank.

GF Score takes following five key aspects into consideration:

1. Financial Strength : 6/10
2. Profitability Rank : 4/10
3. Growth Rank : 1/10
4. GF Value Rank : 5/10
5. Momentum Rank : 10/10

Each one of these components is ranked and the ranks also have positive correlation with the long term performances of stocks. The GF score is calculated using the five key aspects of analysis. Through backtesting, we know that each of these key aspects has a different impact on the stock price performance. Thus, they are weighted differently when calculating the total score. The Profitability Rank and the Growth Rank are weighted fully, while other parameters have less weight.

Based on research and backtesting result, GuruFocus believes Sunflex Technology might have Poor future performance potential.

Please click GF Score to see more details on the GF Score's 5 Key Aspects of Analysis.


Sunflex Technology  (ROCO:3390) GF Score Explanation

Based on the historical long-term performances among five valuation aspects, the GF Score is found to be closely correlated to the long-term performances of stocks. It ranges from 0 to 100, with 100 as the highest. GuruFocus divided GF Score into following 5 categories:

GF Score Performance Potential and All-in-One Screener Examples (1)
91 - 100Highest outperformance potential
81 - 90Good outperformance potential
71 - 80Likely to have average performance
51 - 70Poor future performance potential
0 - 50Worst future performance potential, or not enough data

(1) These are some simple examples. You can access our GF Score filter under All-in-One Screener’s Fundamental tab.


Sunflex Technology GF Score Related Terms


ROCO:3390 vs APH, GLW: GF Score Comparison

For the Electronic Components subindustry, Sunflex Technology's GF Score, along with its competitors' market caps and GF Score data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Sunflex Technology GF Score vs Hardware Industry

For the Hardware industry and Technology sector, Sunflex Technology's GF Score distribution charts can be found below:

* The bar in red indicates where Sunflex Technology's GF Score falls into.


ROCO:3390
63GF Score
Sunflex Technology Corp ROCO:3390
GF Score is just one metric. See GF Score™, valuation, warning signs, and more.
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Frequently Asked Questions Learn more about GF Score →
What does a GF Score of 63 mean?
Sunflex Technology (ROCO:3390) has a GF Score of 63 as of Jul. 17, 2026. GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation. View historical data on Sunflex Technology and its competitors. This is 18% below median its historical median of 77.00. Over the past decade, Sunflex Technology's GF Score has ranged from 25.00 to 85.00.
Is Sunflex Technology's GF Score too high?
Sunflex Technology's current GF Score of 63 is 18% below median its 10-year median of 77.00. Over the past 10 years, this metric has ranged from a low of 25.00 to a high of 85.00. Overall, Sunflex Technology has a GF Score™ of 63/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Sunflex Technology's GF Score compare to APH and GLW?
Sunflex Technology's GF Score of 63 can be compared against companies in the Hardware industry. Historically, Sunflex Technology's own GF Score has ranged from 25.00 to 85.00 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good GF Score for a Hardware company?
A good GF Score depends on the Hardware industry context. However, GF Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high GF Score mean?
A high GF Score can signal that a stock is expensive relative to its fundamentals. GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation. View historical data on Sunflex Technology and its competitors. Sunflex Technology's current GF Score is 63, which is 18% below median its own 10-year median of 77.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Sunflex Technology stock overvalued right now?
Based on GuruFocus' analysis, Sunflex Technology (ROCO:3390) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$19.93, compared to a current price of NT$26.10 — trading 31% above its estimated fair value. The current GF Score is 63, which is 18% below median its 10-year median of 77.00. Sunflex Technology's overall GF Score™ is 63/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is GF Score calculated?
GF Score is calculated from a company's financial statements. For Sunflex Technology (ROCO:3390), the current GF Score is 63 as of Jul. 17, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Sunflex Technology (ROCO:3390) Overvalued in 2026?

Based on GuruFocus' analysis, Sunflex Technology stock appears to be overvalued. The current stock price of NT$26.10 is trading 31% above its estimated GF Value™ of NT$19.93. GuruFocus considers Sunflex Technology to be Significantly Overvalued.

Key valuation signals for ROCO:3390:

  • GF Score: 63 (18% below median its 10-year median of 77.00)
  • GF Value™: NT$19.93 vs. price of NT$26.10 (31% above fair value)
  • GF Score™: 63/100 with 5 warning signs

No single metric tells the full story. See the ROCO:3390 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Sunflex Technology Business Description

Address No. 522, Nanshang Road, Guishan District, Taoyuan, TWN, 333014
Sunflex Technology Corp is the manufacture of electronic components and international trades. It provides single and double-sided flexible PCBs that are applied in the manufacturing of mobile phones, notebook computers, disk players, and LCDs. The company applications include touch panels, liquid crystal module, computer accessories, and a light bar. The Company's operating revenue is mainly derived from the production and sales of customized flexible circuit boards.
63GF Score

Get the complete analysis for ROCO:3390

GF Score is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

NT$26.10
Price
NT$19.93
GF Value