E&R Engineering (ROCO:8027) Net Margin %: 9.58% (As of Dec. 2025)

Author: Vera Yuan Vera Yuan
Vera Yuan
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.
Reviewed by: Charlie Tian Charlie Tian
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:8027 E&R Engineering Corp ROCO:8027
40 GF Score
Price NT$215.50
GF Value NT$102.36
Valuation Significantly Overvalued
! 3 Warning Signs
View Full Analysis

What is E&R Engineering Net Margin %?

E&R Engineering ROCO:8027 -9.83% 40 Net Margin % is 9.58% as of Dec. 2025. GuruFocus rates ROCO:8027 with a GF Score™ of 40/100 and a GF Value™ of NT$102.36 (Significantly Overvalued). The stock has 3 warning signs investors should review. Among 3,031 Industrial Products companies, E&R Engineering ranks worse than 82.22% on this metric.

Net margin is calculated as Net Income divided by its Revenue. E&R Engineering's Net Income for the three months ended in Dec. 2025 was NT$69 Mil. E&R Engineering's Revenue for the three months ended in Dec. 2025 was NT$721 Mil. Therefore, E&R Engineering's net margin for the quarter that ended in Dec. 2025 was 9.58%.

The historical rank and industry rank for E&R Engineering's Net Margin % or its related term are showing as below:

ROCO:8027' s Net Margin % Range Over the Past 10 Years
Min: -9.23   Med: -0.56   Max: 12.13
Current: -5.41


ROCO:8027's Net Margin % is ranked worse than
82.22% of 3031 companies
in the Industrial Products industry
Industry Median: 4.5 vs ROCO:8027: -5.41

E&R Engineering  (ROCO:8027) Net Margin % Explanation

Although Net Income and Earnings-per-Share (EPS) are the most widely used parameter in measuring a company's profitability and valuation, it is the least reliable. The reason is that reported earnings can be manipulated easily by adjusting any numbers such as Depreciation, Depletion and Amotorization and non-recurring items.

But the long term trend of the net margin is a good indicator of the competitiveness and health of the business.


E&R Engineering Net Margin % Related Terms


E&R Engineering Net Margin % Historical Data

* Premium members only.

The historical data trend for E&R Engineering's Net 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.

E&R Engineering Net Margin % Chart

E&R Engineering Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Net Margin %
Get a 7-Day Free Trial Premium Member Only Premium Member Only 9.59 12.13 2.00 -3.11 -5.41

E&R Engineering Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
Net Margin % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only -3.54 -19.28 -31.75 3.19 9.58

ROCO:8027 vs GEV, ETN, PH: Net Margin % Comparison

For the Specialty Industrial Machinery subindustry, E&R Engineering's Net Margin %, along with its competitors' market caps and Net 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.


E&R Engineering Net Margin % vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, E&R Engineering's Net Margin % distribution charts can be found below:

* The bar in red indicates where E&R Engineering's Net Margin % falls into.


ROCO:8027
40GF Score
E&R Engineering Corp ROCO:8027
Net Margin % is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

E&R Engineering Net Margin % Calculation

Net margin - also known as net profit margin is the ratio of Net Income divided by net sales or Revenue, usually presented in percent.

E&R Engineering's Net Margin for the fiscal year that ended in Dec. 2025 is calculated as

Net Margin=Net Income (A: Dec. 2025 )/Revenue (A: Dec. 2025 )
=-97.799/1809.347
=-5.41 %

E&R Engineering's Net Margin for the quarter that ended in Dec. 2025 is calculated as

Net Margin=Net Income (Q: Dec. 2025 )/Revenue (Q: Dec. 2025 )
=69.11/721.417
=9.58 %

* 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.

Frequently Asked Questions Learn more about Net Margin % →
What does a Net Margin % of 9.58% mean?
E&R Engineering (ROCO:8027) has a Net Margin % of 9.58% as of Dec. 2025. Net margin is the ratio of total net income to net sales. View historical data on E&R Engineering and its competitors. According to the industry distribution chart, E&R Engineering ranks #2492 out of 3031 companies in the Industrial Products industry, placing it in the top 82.2%.
Is E&R Engineering's Net Margin % too high?
E&R Engineering's current Net Margin % is 9.58%. The Industrial Products industry median Net Margin % is 4.50. E&R Engineering's value of 9.58% is 112.9% above this industry median. Based on the distribution chart, E&R Engineering ranks #2492 out of 3031 companies in the Industrial Products industry, which is in the bottom quartile relative to peers. Overall, E&R Engineering has a GF Score™ of 40/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does E&R Engineering's Net Margin % compare to GEV and ETN?
According to the Industrial Products industry distribution chart, E&R Engineering ranks #2492 out of 3031 companies for Net Margin %. This places E&R Engineering in the lower half of its industry. The industry median Net Margin % is 4.50. E&R Engineering's value of 9.58% is 112.9% above this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Net Margin % for an Industrial Products company?
The median Net Margin % among Industrial Products companies is 4.50, based on 3,031 companies in the industry. Companies in the top quartile (top 25%) have a Net Margin % significantly above this median, while those in the bottom quartile fall well below. However, Net Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. E&R Engineering's current Net Margin % of 9.58% is 112.9% 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 Net Margin % mean?
A high Net Margin % can signal that a stock is expensive relative to its fundamentals. Net margin is the ratio of total net income to net sales. View historical data on E&R Engineering and its competitors. For the Industrial Products industry, the median Net Margin % is 4.50 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. E&R Engineering's current Net Margin % is 9.58%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is E&R Engineering stock overvalued right now?
Based on GuruFocus' analysis, E&R Engineering (ROCO:8027) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$102.36, compared to a current price of NT$215.50 — trading 110.5% above its estimated fair value. The current Net Margin % is 9.58% and 112.9% above the Industrial Products industry median of 4.50. E&R Engineering's overall GF Score™ is 40/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Net Margin % calculated?
Net Margin % is calculated from a company's financial statements. For E&R Engineering (ROCO:8027), the current Net Margin % is 9.58% as of Dec. 2025. 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 E&R Engineering (ROCO:8027) Overvalued in 2026?

Based on GuruFocus' analysis, E&R Engineering stock appears to be overvalued. The current stock price of NT$215.50 is trading 110.5% above its estimated GF Value™ of NT$102.36. GuruFocus considers E&R Engineering to be Significantly Overvalued.

Key valuation signals for ROCO:8027:

  • Net Margin %: 9.58%
  • GF Value™: NT$102.36 vs. price of NT$215.50 (110.5% above fair value)
  • GF Score™: 40/100 with 3 warning signs
  • Industry Position: 112.9% above the Industrial Products median (#2492 of 3031)

No single metric tells the full story. See the ROCO:8027 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


E&R Engineering Business Description

Address Hengshan Road, No. 61, Yanchao District, Kaohsiung, TWN, 824
E&R Engineering Corp engages mainly in the planning, designing, manufacturing, installing, and selling of automatic machines, related components, computer software, and pollution control equipment. Its main product offerings include laser and plasma equipment for semiconductor, LED, and passive component industries; laboratory testing equipment, flexible printed circuit equipment, and semiconductor packaging solutions. The Group operates in the following reportable segments: Automation Equipment, which generates the maximum revenue, Flexible Printed Circuit (FPC), Semiconductor Packaging Materials, and Others. Geographically, it generates maximum revenue from Taiwan, and the rest from Hong Kong and Mainland China, Southeast Asia, America, Europe, and other regions.
40GF Score

Get the complete analysis for ROCO:8027

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

NT$215.50
Price
NT$102.36
GF Value