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.
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.
BBK Test Systems CoSZSE:301598 -1.48%43 Operating Margin % is 26.03% as of Jun. 2026, which is 12% above its 10-year median of 23.25. GuruFocus rates SZSE:301598 with a GF Score™ of 43/100. The stock has 7 warning signs investors should review. Among 3,049 Industrial Products companies, BBK Test Systems Co ranks better than 94.72% on this metric.
BBK Test Systems Co Ltd operating margin has been in a 5-year decline. The average rate of decline per year is -3.5%.
The historical rank and industry rank for BBK Test Systems Co's Operating Margin % or its related term are showing as below:
SZSE:301598'
s Operating Margin % Range Over the Past 10 Years
Min: 3.46 Med: 23.25 Max: 31.73
Current: 23.35
SZSE:301598's Operating Margin % is ranked better than 94.72% of 3049
companies
in the Industrial Products industry
Industry Median: 6.43
vs SZSE:301598: 23.35
BBK Test Systems Co's 5-Year Average Operating Margin % Growth Rate was -3.50% per year.
BBK Test Systems Co (SZSE:301598) 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.
BBK Test Systems Co Operating Margin % Related Terms
BBK Test Systems Co Operating Margin % Historical Data
* Premium members only.
The historical data trend for BBK Test Systems Co's Operating Margin % can be seen below:
* 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.
SZSE:301598 vs GEV, ETN, PH: Operating Margin % Comparison
For the Specialty Industrial Machinery subindustry, BBK Test Systems 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.
BBK Test Systems Co Operating Margin % vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, BBK Test Systems Co's Operating Margin % distribution charts can be found below:
* The bar in red indicates where BBK Test Systems Co's Operating Margin % falls into.
BBK Test Systems 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.
BBK Test Systems 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.
BBK Test Systems Co (SZSE:301598) has a Operating Margin % of 26.03% as of Jun. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on BBK Test Systems Co and its competitors. This is 12% above median its historical median of 23.25. Over the past decade, BBK Test Systems Co's Operating Margin % has ranged from 3.46 to 31.73. According to the industry distribution chart, BBK Test Systems Co ranks #161 out of 3049 companies in the Industrial Products industry, placing it in the top 5.3%.
Is BBK Test Systems Co's Operating Margin % too high?
BBK Test Systems Co's current Operating Margin % of 26.03% is 12% above median its 10-year median of 23.25. Over the past 10 years, this metric has ranged from a low of 3.46 to a high of 31.73. The Industrial Products industry median Operating Margin % is 6.43. BBK Test Systems Co's value of 26.03% is 304.8% above this industry median. Based on the distribution chart, BBK Test Systems Co ranks #161 out of 3049 companies in the Industrial Products industry, which is in the top quartile — a strong position relative to peers. Overall, BBK Test Systems Co has a GF Score™ of 43/100, reflecting its overall financial health beyond just this single metric.
How does BBK Test Systems Co's Operating Margin % compare to GEV and ETN?
According to the Industrial Products industry distribution chart, BBK Test Systems Co ranks #161 out of 3049 companies for Operating Margin %. This places BBK Test Systems Co in the top 5% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 6.43. BBK Test Systems Co's value of 26.03% is 304.8% above this benchmark. Historically, BBK Test Systems Co's own Operating Margin % has ranged from 3.46 to 31.73 over the past decade. While the company's 10-year median is 23.25 vs. the industry median of 6.43, BBK Test Systems 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 an Industrial Products company?
The median Operating Margin % among Industrial Products companies is 6.43, based on 3,049 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. BBK Test Systems Co's current Operating Margin % of 26.03% is 304.8% 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 BBK Test Systems Co and its competitors. For the Industrial Products industry, the median Operating Margin % is 6.43 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. BBK Test Systems Co's current Operating Margin % is 26.03%, which is 12% above median its own 10-year median of 23.25. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is BBK Test Systems Co stock overvalued right now?
BBK Test Systems Co (SZSE:301598) has a current Operating Margin % of 26.03%. The current Operating Margin % is 26.03%, which is 12% above median its 10-year median of 23.25 and 304.8% above the Industrial Products industry median of 6.43. BBK Test Systems Co's overall GF Score™ is 43/100 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 BBK Test Systems Co (SZSE:301598), the current Operating Margin % is 26.03% 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.
BBK Test Systems Co Ltd is engaged in comprehensive services including research and development, design, manufacturing, sales, and system integration of servo hydraulic testing equipment and automotive testing equipment.
43GF Score
Get the complete analysis for SZSE:301598
Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
SZSE:301598 has been successfully added to your 
