Zylox-Tonbridge Medical Technology Co (HKSE:02190) Operating Margin %: 21.47% (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.

HKSE:02190 Zylox-Tonbridge Medical Technology Co Ltd HKSE:02190
81 GF Score
Price HK$19.95
GF Value HK$35.80
Valuation Significantly Undervalued
! 5 Warning Signs
View Full Analysis

What is Zylox-Tonbridge Medical Technology Co Operating Margin %?

Zylox-Tonbridge Medical Technology Co HKSE:02190 +3.05% 81 Operating Margin % is 21.47% as of Dec. 2025. GuruFocus rates HKSE:02190 with a GF Score™ of 81/100 and a GF Value™ of HK$35.80 (Significantly Undervalued). The stock has 5 warning signs investors should review. Among 814 Medical Devices & Instruments companies, Zylox-Tonbridge Medical Technology Co ranks better than 88.45% on this metric.

Operating Margin % is calculated as Operating Income divided by its Revenue. Zylox-Tonbridge Medical Technology Co's Operating Income for the six months ended in Dec. 2025 was HK$137 Mil. Zylox-Tonbridge Medical Technology Co's Revenue for the six months ended in Dec. 2025 was HK$636 Mil. Therefore, Zylox-Tonbridge Medical Technology Co's Operating Margin % for the quarter that ended in Dec. 2025 was 21.47%.

The historical rank and industry rank for Zylox-Tonbridge Medical Technology Co's Operating Margin % or its related term are showing as below:

HKSE:02190' s Operating Margin % Range Over the Past 10 Years
Min: -1402.23   Med: -66.5   Max: 21.09
Current: 21.09


HKSE:02190's Operating Margin % is ranked better than
88.45% of 814 companies
in the Medical Devices & Instruments industry
Industry Median: 3.35 vs HKSE:02190: 21.09

Zylox-Tonbridge Medical Technology Co's 5-Year Average Operating Margin % Growth Rate was 0.00% per year.

Zylox-Tonbridge Medical Technology Co's Operating Income for the six months ended in Dec. 2025 was HK$137 Mil. Its Operating Income for the trailing twelve months (TTM) ended in Dec. 2025 was HK$245 Mil.

Warning Sign:

Zylox-Tonbridge Medical Technology Co Ltd has recorded a loss in operating income at least once over the past 3 years.


Zylox-Tonbridge Medical Technology Co  (HKSE:02190) 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 Nokia’s 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.


Zylox-Tonbridge Medical Technology Co Operating Margin % Related Terms


Zylox-Tonbridge Medical Technology Co Operating Margin % Historical Data

* Premium members only.

The historical data trend for Zylox-Tonbridge Medical Technology 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.

Zylox-Tonbridge Medical Technology Co Operating Margin % Chart

Zylox-Tonbridge Medical Technology Co Annual Data
Trend Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Operating Margin %
Get a 7-Day Free Trial -122.72 -66.50 -27.30 9.85 21.09

Zylox-Tonbridge Medical Technology Co Semi-Annual Data
Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
Operating Margin % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only -20.75 12.15 7.82 20.63 21.47

HKSE:02190 vs ABT, SYK, MDT: Operating Margin % Comparison

For the Medical Devices subindustry, Zylox-Tonbridge Medical 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.


Zylox-Tonbridge Medical Technology Co Operating Margin % vs Medical Devices & Instruments Industry

For the Medical Devices & Instruments industry and Healthcare sector, Zylox-Tonbridge Medical Technology Co's Operating Margin % distribution charts can be found below:

* The bar in red indicates where Zylox-Tonbridge Medical Technology Co's Operating Margin % falls into.


HKSE:02190
81GF Score
Zylox-Tonbridge Medical Technology Co Ltd HKSE:02190
Operating Margin % is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Zylox-Tonbridge Medical 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.

Zylox-Tonbridge Medical Technology Co's Operating Margin % for the fiscal year that ended in Dec. 2025 is calculated as

Operating Margin %=Operating Income (A: Dec. 2025 ) / Revenue (A: Dec. 2025 )
=246.345 / 1168.234
=21.09 %

Zylox-Tonbridge Medical Technology Co's Operating Margin % for the quarter that ended in Dec. 2025 is calculated as

Operating Margin %=Operating Income (Q: Dec. 2025 ) / Revenue (Q: Dec. 2025 )
=136.503 / 635.79
=21.47 %

* 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 Operating Margin % →
What does a Operating Margin % of 21.47% mean?
Zylox-Tonbridge Medical Technology Co (HKSE:02190) has a Operating Margin % of 21.47% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Zylox-Tonbridge Medical Technology Co and its competitors. According to the industry distribution chart, Zylox-Tonbridge Medical Technology Co ranks #94 out of 814 companies in the Medical Devices & Instruments industry, placing it in the top 11.5%.
Is Zylox-Tonbridge Medical Technology Co's Operating Margin % too high?
Zylox-Tonbridge Medical Technology Co's current Operating Margin % is 21.47%. The Medical Devices & Instruments industry median Operating Margin % is 3.35. Zylox-Tonbridge Medical Technology Co's value of 21.47% is 540.9% above this industry median. Based on the distribution chart, Zylox-Tonbridge Medical Technology Co ranks #94 out of 814 companies in the Medical Devices & Instruments industry, which is in the top quartile — a strong position relative to peers. Overall, Zylox-Tonbridge Medical Technology Co has a GF Score™ of 81/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Zylox-Tonbridge Medical Technology Co's Operating Margin % compare to ABT and SYK?
According to the Medical Devices & Instruments industry distribution chart, Zylox-Tonbridge Medical Technology Co ranks #94 out of 814 companies for Operating Margin %. This places Zylox-Tonbridge Medical Technology Co in the top 12% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 3.35. Zylox-Tonbridge Medical Technology Co's value of 21.47% is 540.9% 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 Operating Margin % for a Medical Devices & Instruments company?
The median Operating Margin % among Medical Devices & Instruments companies is 3.35, based on 814 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. Zylox-Tonbridge Medical Technology Co's current Operating Margin % of 21.47% is 540.9% 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 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 Zylox-Tonbridge Medical Technology Co and its competitors. For the Medical Devices & Instruments industry, the median Operating Margin % is 3.35 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Zylox-Tonbridge Medical Technology Co's current Operating Margin % is 21.47%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Zylox-Tonbridge Medical Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Zylox-Tonbridge Medical Technology Co (HKSE:02190) is currently considered Significantly Undervalued. The stock's GF Value™ is HK$35.80, compared to a current price of HK$19.95 — trading 44.3% below its estimated fair value. The current Operating Margin % is 21.47% and 540.9% above the Medical Devices & Instruments industry median of 3.35. Zylox-Tonbridge Medical Technology Co's overall GF Score™ is 81/100 with 5 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 Zylox-Tonbridge Medical Technology Co (HKSE:02190), the current Operating Margin % is 21.47% 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 Zylox-Tonbridge Medical Technology Co (HKSE:02190) Overvalued in 2026?

Based on GuruFocus' analysis, Zylox-Tonbridge Medical Technology Co stock appears to be undervalued. The current stock price of HK$19.95 is trading 44.3% below its estimated GF Value™ of HK$35.80. GuruFocus considers Zylox-Tonbridge Medical Technology Co to be Significantly Undervalued.

Key valuation signals for HKSE:02190:

  • Operating Margin %: 21.47%
  • GF Value™: HK$35.80 vs. price of HK$19.95 (44.3% below fair value)
  • GF Score™: 81/100 with 5 warning signs
  • Industry Position: 540.9% above the Medical Devices & Instruments median (#94 of 814)

No single metric tells the full story. See the HKSE:02190 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Zylox-Tonbridge Medical Technology Co Business Description

Other Exchanges 818:Germany
Address 270 Shuyun Road, Cangqian Street, Zylox-Tonbridge Industrial Park, Yuhang District, Zhejiang Province, Hangzhou, CHN
Zylox-Tonbridge Medical Technology Co Ltd is principally engaged in providing solutions to patients and physicians with a product portfolio covering peripheral-vascular interventional devices and neurovascular interventional devices in China and other countries. The company's products include Thrombite Clot Retriever Device (Thrombite CRD), Ultrafree Drug Coated PTA Balloon Catheter (Ultrafree DCB), and others. The company derives majority of its revenue from PRC.
81GF Score

Get the complete analysis for HKSE:02190

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

HK$19.95
Price
HK$35.80
GF Value