Eternal Materials Co (TPE:1717) Cyclically Adjusted Book per Share: NT$23.05 (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.

TPE:1717 Eternal Materials Co Ltd TPE:1717
66 GF Score
Price NT$64.50
GF Value NT$31.11
Valuation Significantly Overvalued
! 7 Warning Signs
View Full Analysis

What is Eternal Materials Co Cyclically Adjusted Book per Share?

Eternal Materials Co TPE:1717 -8.90% 66 Cyclically Adjusted Book per Share is NT$23.05 as of Dec. 2025. GuruFocus rates TPE:1717 with a GF Score™ of 66/100 and a GF Value™ of NT$31.11 (Significantly Overvalued). The stock has 7 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

Eternal Materials Co's adjusted book value per share for the three months ended in Dec. 2025 was NT$23.559. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is NT$23.05 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Eternal Materials Co's average Cyclically Adjusted Book Growth Rate was 1.70% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 2.60% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 4.50% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Eternal Materials Co was 6.10% per year. The lowest was 2.60% per year. And the median was 4.40% per year.

As of today (2026-07-19), Eternal Materials Co's current stock price is NT$64.50. Eternal Materials Co's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$23.05. Eternal Materials Co's Cyclically Adjusted PB Ratio of today is 2.80.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Eternal Materials Co was 3.59. The lowest was 1.04. And the median was 1.54.


Eternal Materials Co  (TPE:1717) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

Eternal Materials Co's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=64.50/23.05
=2.80

* 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.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Eternal Materials Co was 3.59. The lowest was 1.04. And the median was 1.54.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


Eternal Materials Co Cyclically Adjusted Book per Share Related Terms


Eternal Materials Co Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Eternal Materials Co's Cyclically Adjusted Book per Share 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.

Eternal Materials Co Cyclically Adjusted Book per Share Chart

Eternal Materials Co Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 19.93 21.37 22.02 22.67 23.05

Eternal Materials Co Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
Cyclically Adjusted Book per Share 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 22.67 22.93 23.07 23.15 23.05

TPE:1717 vs LIN, SHW, ECL: Cyclically Adjusted Book per Share Comparison

For the Specialty Chemicals subindustry, Eternal Materials Co's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB Ratio 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.


Eternal Materials Co Cyclically Adjusted PB Ratio vs Chemicals Industry

For the Chemicals industry and Basic Materials sector, Eternal Materials Co's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Eternal Materials Co's Cyclically Adjusted PB Ratio falls into.


TPE:1717
66GF Score
Eternal Materials Co Ltd TPE:1717
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Eternal Materials Co Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Book per Share.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

For example, Eternal Materials Co's adjusted Book Value per Share data for the three months ended in Dec. 2025 was:

Adj_Book= Book Value per Share /CPI of Dec. 2025 (Change)*Current CPI (Dec. 2025)
=23.559/324.0540*324.0540
=23.559

Current CPI (Dec. 2025) = 324.0540.

Eternal Materials Co Quarterly Data

Book Value per Share CPI Adj_Book
201603 18.932 238.132 25.763
201606 17.743 241.018 23.856
201609 17.674 241.428 23.723
201612 17.524 241.432 23.521
201703 16.980 243.801 22.569
201706 16.218 244.955 21.455
201709 16.880 246.819 22.162
201712 17.367 246.524 22.829
201803 18.165 249.554 23.588
201806 17.971 251.989 23.110
201809 17.528 252.439 22.501
201812 17.787 251.233 22.943
201903 19.101 254.202 24.350
201906 18.372 256.143 23.243
201909 17.977 256.759 22.689
201912 18.136 256.974 22.870
202003 18.122 258.115 22.752
202006 16.837 257.797 21.164
202009 18.086 260.280 22.517
202012 19.338 260.474 24.058
202103 19.855 264.877 24.291
202106 20.621 271.696 24.595
202109 19.707 274.310 23.281
202112 20.528 278.802 23.860
202203 22.187 287.504 25.008
202206 20.782 296.311 22.728
202209 20.854 296.808 22.768
202212 20.969 296.797 22.895
202303 20.000 301.836 21.472
202306 19.619 305.109 20.837
202309 21.219 307.789 22.340
202312 20.948 306.746 22.130
202403 21.632 312.332 22.444
202406 22.377 314.175 23.081
202409 23.132 315.301 23.774
202412 23.979 315.605 24.621
202503 23.420 319.799 23.732
202506 20.625 322.561 20.720
202509 22.255 324.800 22.204
202512 23.559 324.054 23.559

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of NT$23.05 mean?
Eternal Materials Co (TPE:1717) has a Cyclically Adjusted Book per Share of NT$23.05 as of Dec. 2025. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Eternal Materials Co and its competitors.
Is Eternal Materials Co's Cyclically Adjusted Book per Share too high?
Eternal Materials Co's current Cyclically Adjusted Book per Share is NT$23.05. Overall, Eternal Materials Co has a GF Score™ of 66/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Eternal Materials Co's Cyclically Adjusted Book per Share compare to LIN and SHW?
Eternal Materials Co's Cyclically Adjusted Book per Share of NT$23.05 can be compared against companies in the Chemicals industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for a Chemicals company?
A good Cyclically Adjusted Book per Share depends on the Chemicals industry context. However, Cyclically Adjusted Book per Share 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 Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Eternal Materials Co and its competitors. Eternal Materials Co's current Cyclically Adjusted Book per Share is NT$23.05. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Eternal Materials Co stock overvalued right now?
Based on GuruFocus' analysis, Eternal Materials Co (TPE:1717) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$31.11, compared to a current price of NT$64.50 — trading 107.3% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$23.05. Eternal Materials Co's overall GF Score™ is 66/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Eternal Materials Co (TPE:1717), the current Cyclically Adjusted Book per Share is NT$23.05 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 Eternal Materials Co (TPE:1717) Overvalued in 2026?

Based on GuruFocus' analysis, Eternal Materials Co stock appears to be overvalued. The current stock price of NT$64.50 is trading 107.3% above its estimated GF Value™ of NT$31.11. GuruFocus considers Eternal Materials Co to be Significantly Overvalued.

Key valuation signals for TPE:1717:

  • Cyclically Adjusted Book per Share: NT$23.05
  • GF Value™: NT$31.11 vs. price of NT$64.50 (107.3% above fair value)
  • GF Score™: 66/100 with 7 warning signs

No single metric tells the full story. See the TPE:1717 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Eternal Materials Co Business Description

Address No. 578, Jiangong Road, Sanmin District, Kaohsiung, TWN, 807
Eternal Materials Co Ltd is mainly engaged in the research, manufacturing, processing, sale, and trading of diversified industrial synthetic resins, epoxy resin, acrylates, methacrylates, coating, molding compounds, copper clad laminates, film materials, photoresist materials, electronic chemical materials, composite materials, and bio-medical testing materials. The Company operates through the following segments: Resins Materials, which generates the maximum revenue and mainly operates a variety of industrial resins materials; Electronic Materials, which mainly operates electronic and optoelectronic industry raw materials and vacuum laminators; High Performance Materials, which mainly operates UV-light curing raw materials; and Others.
66GF Score

Get the complete analysis for TPE:1717

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

NT$64.50
Price
NT$31.11
GF Value