Company-wide revenue
Reported revenue in 2021 ¥918.58B Reported revenue in 2025 ¥1.02T
- growth amount
- +¥101.34B
- growth annualized
- +2.7%
- growth total
- +11.0%
Japanese company profile · 4042
TOSOH CORPORATION
In its FY2025 public filing, TOSOH CORPORATION reports Petrochemicals, Chlor-alkali, Functional Products, Engineering. The page shows business-level revenue and profit where the source disclosures support comparison.
Original Japanese company name: 東ソー株式会社
English company name recorded in Japan's EDINET filer data. English company name source
Reported company-wide figures
What does this company do?
What does this company do?
TOSOH CORPORATION's largest reported business by revenue in FY2025 was Chlor-alkali.
The business with the highest reported segment profit in FY2025 was Engineering.
FY2025 · fiscal year ended March 2026 View original filing ↗ The source document may be in Japanese.
Business structure
How does it make money?
| Business | Sales | Revenue share | Operating profit |
|---|---|---|---|
| Chlor-alkali | ¥390.06B ↗ | 38.2% | ¥1.92B ↗ |
| Petrochemicals | ¥298.81B ↗ | 29.3% | ¥9.72B ↗ |
| Functional Products | ¥294.22B ↗ | 28.8% | ¥39.93B ↗ |
| Engineering | ¥203.32B ↗ | 19.9% | ¥40.38B ↗ |
All values are in Japanese yen (JPY). No currency conversion is applied. FY2025 · fiscal year ended March 2026. Revenue and profit are shown only where the filing and data support a comparison.
Original Japanese label
- Petrochemicals
- 石油化学
- Chlor-alkali
- クロル・アルカリ
- Functional Products
- 機能商品
- Engineering
- エンジニアリング
- Sales
- 売上高
- Operating profit
- 営業利益
Original Japanese label
- Petrochemicals
- 石油化学
- Chlor-alkali
- クロル・アルカリ
- Functional Products
- 機能商品
- Engineering
- エンジニアリング
- Sales
- 売上高
- Operating profit
- 営業利益
Reported Sales by business over time
Reported Sales by business over time
| Fiscal year | FY2021 | FY2022 | FY2023 | FY2024 | FY2025 |
|---|---|---|---|---|---|
| Petrochemicals | ¥293.04B | ¥355.28B | ¥315.83B | ¥354.45B | ¥298.81B |
| Chlor-alkali | ¥401.4B | ¥462.1B | ¥405.51B | ¥420.54B | ¥390.06B |
| Functional Products | ¥243.25B | ¥294.44B | ¥281.15B | ¥292.98B | ¥294.22B |
| Engineering | ¥130.96B | ¥165.65B | ¥172.72B | ¥186.98B | ¥203.32B |
All amounts are in Japanese yen (JPY). Each figure links to the original Japanese filing. Blank cells indicate no comparable figure was disclosed. Business figures may not add up to consolidated figures.
What is growing?
What is growing?
Business revenue growth
Engineering
Reported revenue in 2021 ¥130.96B Reported revenue in 2025 ¥203.32B
- growth amount
- +¥72.37B
- growth annualized
- +11.6%
- growth total
- +55.3%
View original filing
Engineering
Reported profit margin in 2022 +10.8%
Reported profit margin in 2025 +19.9%
- growth margin points
- +9.0
View original filing
Chlor-alkali
Reported profit margin in 2022 -2.3%
Reported profit margin in 2025 +0.5%
- growth margin points
- +2.8
View original filing
This describes a reported period; it is not a forecast.
What has changed?
What has changed?
Not disclosed or not safely comparable in the available filings.
Source
Public filing
FY2025 · fiscal year ended March 2026
The source document may be in Japanese.
Filing ID: S100YE5Q
View original filing ↗Ask about this company
Ask about this company
The source document may be in Japanese.