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Jiujiang Defu Technology CoSZSE:301511 +4.15%65 Operating Margin % is 7.07% as of Jun. 2026, which is 34% above its 10-year median of 5.28. GuruFocus rates SZSE:301511 with a GF Score™ of 65/100 and a GF Value™ of ¥35.68 (Significantly Overvalued). The stock has 7 warning signs investors should review. Among 843 Metals & Mining companies, Jiujiang Defu Technology Co ranks worse than 50.65% on this metric.
The historical rank and industry rank for Jiujiang Defu Technology Co's Operating Margin % or its related term are showing as below:
SZSE:301511'
s Operating Margin % Range Over the Past 10 Years
Min: -1.3 Med: 5.28 Max: 19.42
Current: 6.1
SZSE:301511's Operating Margin % is ranked worse than 50.65% of 843
companies
in the Metals & Mining industry
Industry Median: 6.25
vs SZSE:301511: 6.10
Jiujiang Defu Technology Co (SZSE:301511) Operating Margin % Explanation
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
Jiujiang Defu Technology Co Operating Margin % Related Terms
Jiujiang Defu Technology Co Operating Margin % Historical Data
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Jiujiang Defu Technology Co Operating Margin % Chart
SZSE:301511 vs SCCO, FCX: Operating Margin % Comparison
For the Copper subindustry, Jiujiang Defu Technology Co's Operating Margin %, along with its competitors' market caps and Operating Margin % 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.
Jiujiang Defu Technology Co Operating Margin % vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Jiujiang Defu Technology Co's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Jiujiang Defu Technology Co's Operating Margin % falls into.
Jiujiang Defu Technology Co Operating Margin % Calculation
Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.
Jiujiang Defu Technology Co's Operating Margin % for the fiscal year that ended in Dec. 2025 is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Jiujiang Defu Technology Co (SZSE:301511) has a Operating Margin % of 7.07% as of Jun. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Jiujiang Defu Technology Co and its competitors. This is 34% above median its historical median of 5.28. According to the industry distribution chart, Jiujiang Defu Technology Co ranks #427 out of 843 companies in the Metals & Mining industry, placing it in the top 50.7%.
Is Jiujiang Defu Technology Co's Operating Margin % too high?
Jiujiang Defu Technology Co's current Operating Margin % of 7.07% is 34% above median its 10-year median of 5.28. The Metals & Mining industry median Operating Margin % is 6.25. Jiujiang Defu Technology Co's value of 7.07% is 13.1% above this industry median. Based on the distribution chart, Jiujiang Defu Technology Co ranks #427 out of 843 companies in the Metals & Mining industry, which is below the industry midpoint. Overall, Jiujiang Defu Technology Co has a GF Score™ of 65/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Jiujiang Defu Technology Co's Operating Margin % compare to SCCO and FCX?
According to the Metals & Mining industry distribution chart, Jiujiang Defu Technology Co ranks #427 out of 843 companies for Operating Margin %. This places Jiujiang Defu Technology Co in the lower half of its industry. The industry median Operating Margin % is 6.25. Jiujiang Defu Technology Co's value of 7.07% is 13.1% above this benchmark. While the company's 10-year median is 5.28 vs. the industry median of 6.25, Jiujiang Defu Technology Co has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Operating Margin % for a Metals & Mining company?
The median Operating Margin % among Metals & Mining companies is 6.25, based on 843 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Jiujiang Defu Technology Co's current Operating Margin % of 7.07% is 13.1% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on Jiujiang Defu Technology Co and its competitors. For the Metals & Mining industry, the median Operating Margin % is 6.25 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Jiujiang Defu Technology Co's current Operating Margin % is 7.07%, which is 34% above median its own 10-year median of 5.28. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Jiujiang Defu Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Jiujiang Defu Technology Co (SZSE:301511) is currently considered Significantly Overvalued. The stock's GF Value™ is ¥35.68, compared to a current price of ¥90.50 — trading 153.6% above its estimated fair value. The current Operating Margin % is 7.07%, which is 34% above median its 10-year median of 5.28 and 13.1% above the Metals & Mining industry median of 6.25. Jiujiang Defu Technology Co's overall GF Score™ is 65/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For Jiujiang Defu Technology Co (SZSE:301511), the current Operating Margin % is 7.07% as of Jun. 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 Jiujiang Defu Technology Co (SZSE:301511) Overvalued in 2026?
Based on GuruFocus' analysis, Jiujiang Defu Technology Co stock appears to be overvalued.
The current stock price of ¥90.50 is trading 153.6% above its estimated GF Value™ of ¥35.68.
GuruFocus considers Jiujiang Defu Technology Co to be Significantly Overvalued.
Key valuation signals for SZSE:301511:
Operating Margin %: 7.07% (34% above median its 10-year median of 5.28)
GF Value™: ¥35.68 vs. price of ¥90.50 (153.6% above fair value)
Industry Position: 13.1% above the Metals & Mining median (#427 of 843)
No single metric tells the full story. See the SZSE:301511 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Jiujiang Defu Technology Co Ltd is engaged in the research and development, production and sales of various high-performance electrolytic copper foils. The products mainly include various high-performance lithium battery copper foils and electronic circuit copper foils.
65GF Score
Get the complete analysis for SZSE:301511
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