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Seibu Giken Co., Ltd.

6223Standard MarketMachinery

株式会社西部技研 logo
Seibu Giken Co., Ltd.6223

Air Conditioning Business

A single segment covering the manufacturing, sales, and servicing of air conditioning equipment centered on honeycomb rotor technology

PeriodCurrentPreviousChange
Sales (cumulative Q1 of FY2026, ending December 2026)¥9,619 million¥6,835 million (Q1 of FY2025, ending December 2025)
Operating profit (cumulative Q1 of FY2026, ending December 2026)¥1,533 million¥1,259 million (Q1 of FY2025, ending December 2025)
Ordinary profit (cumulative Q1 of FY2026, ending December 2026)¥1,604 million¥1,221 million (Q1 of FY2025, ending December 2025)
Quarterly net profit attributable to owners of the parent (cumulative Q1 of FY2026, ending December 2026)¥1,443 million¥924 million (Q1 of FY2025, ending December 2025)
Operating profit margin (cumulative Q1 of FY2026, ending December 2026)15.9%18.4% (Q1 of FY2025, ending December 2025)
EBITDA margin (cumulative Q1 of FY2026, ending December 2026)18.7%21.7% (Q1 of FY2025, ending December 2025)
Quarterly net profit per share¥73.30¥45.23 (Q1 of FY2025, ending December 2025)
Equity ratio62.4%66.6% (end of FY2025, ending December 2025)
Full-year sales forecast (FY2026, ending December 2026)¥36,050 million¥34,322 million (FY2025, ending December 2025, actual)
Full-year operating profit forecast (FY2026, ending December 2026)¥4,030 million¥4,530 million (FY2025, ending December 2025, actual)

Business Details

With Desiccant Dehumidifiers, VOC Concentrators, and Total Heat Exchangers as its core products, the company serves a wide range of industries including food, pharmaceuticals, lithium-ion batteries, semiconductors, and automotive coating. Built on honeycomb laminate technology established in 1974, it is a global manufacturer with four domestic plants and six overseas plants, and a sales network spanning approximately 50 countries. In the first quarter of FY2026 (ending December 2026) (single segment), sales were ¥9,619 million (up 40.7% year on year), and operating profit was ¥1,533 million (up 21.8% year on year).

Recent Overview

Q1 sales rose 40.7% year on year to ¥9,619 million, driven by a sharp increase in domestic Desiccant Dehumidifier sales

In the first quarter of FY2026 (ending December 2026), sales reached ¥9,619 million (up 40.7% year on year), driven mainly by increased domestic sales of Desiccant Dehumidifiers. By region, Japan sales roughly doubled to ¥6,186 million (versus ¥3,122 million in the same period of the prior year), while China sales declined to ¥1,090 million (versus ¥1,431 million). Sales recognized over time surged to ¥4,397 million (versus ¥870 million), reflecting a shift in the revenue structure. A subsidy income of ¥500 million related to the new domestic plant was recorded as extraordinary income. The financial structure shifted due to treasury stock acquisitions (¥999 million) and an increase in short-term borrowings (up ¥5,700 million). The full-year earnings forecast remains unchanged (sales of ¥36,050 million, operating profit of ¥4,030 million).

Key Products

product
Desiccant Dehumidifier

A core product essential for achieving low dew-point environments in manufacturing processes for lithium-ion batteries, semiconductors, pharmaceuticals, food, and other applications. It was the primary driver of the significant increase in domestic sales in the first quarter of FY2026 (ending December 2026). A rental service is also offered.

product
VOC Concentrator

Deployed for solvent recovery and reuse applications in automotive coating processes and EV battery manufacturing processes. Europe and China are the main markets, but the product carries a risk of sales volatility due to the slowdown in the Chinese economy and fluctuations in large-scale European projects.

product
Total Heat Exchanger

A product that achieves energy-efficient ventilation for building and industrial applications. It is one of the core product lines alongside the Desiccant Dehumidifier and VOC Concentrator.

service
Desiccant Dehumidifier Rental Service

Revenue is recognized as a service transferred over a period of time. In the first quarter of FY2026 (ending December 2026), sales recognized over time increased sharply to ¥4,397 million (versus ¥870 million in the same period of the prior year), contributing to revenue stabilization.

service
Installation, Maintenance & Rotor Replacement Service

Functions as an ongoing revenue source following product sales. It captures demand for periodic replacement of honeycomb rotors and helps maintain long-term relationships with customers.

Growth Drivers

  • Increased demand for Desiccant Dehumidifiers driven by continued expansion of domestic lithium-ion battery manufacturing investment (Japan sales in Q1 of FY2026, ending December 2026: ¥6,186 million, roughly double the ¥3,122 million in the same period of the prior year)
  • Revenue stabilization from the rapid expansion of services transferred over a period of time, such as rentals (Q1 of FY2026, ending December 2026: ¥4,397 million, versus ¥870 million in the same period of the prior year)
  • Expanded production capacity from the completion of a new domestic plant (construction in progress increased by ¥834 million; subsidy income of ¥500 million was recorded)
  • Expansion of sales to South Korea (Q1 of FY2026, ending December 2026: ¥861 million, versus ¥214 million in the same period of the prior year)
  • Growing new demand for VOC Concentrators for solvent recovery and reuse applications in EV battery manufacturing processes
  • Expectations of expanded corporate capital investment driven by the continuation of the mid- to long-term decarbonization trend
  • Continued strong order intake and sales recognition, as reflected in the increase in notes and accounts receivable and contract assets (from ¥9,327 million to ¥12,758 million)

Risks

  • Continued decline in Desiccant Dehumidifier and VOC Concentrator sales due to a prolonged slowdown in the Chinese economy (China sales fell from ¥1,431 million to ¥1,090 million year on year)
  • Risk of sales volatility in Europe due to dependence on large-scale VOC Concentrator projects (Europe sales: ¥949 million versus ¥858 million in the same period of the prior year)
  • Impact on North American operations from the review of U.S. trade policy (tariffs) (U.S. sales declined from ¥296 million to ¥168 million year on year), and uncertainty in capital investment due to reconsideration of decarbonization policy
  • Cost pressure indicated by the decline in operating profit margin (from 18.4% to 15.9% year on year) and EBITDA margin (from 21.7% to 18.7%)
  • Increased financial burden from a sharp rise in short-term borrowings (from ¥3,200 million to ¥8,900 million) and a decline in the equity ratio (from 66.6% to 62.4%)
  • Risk that the full-year operating profit forecast represents an 11.0% year-on-year decline (¥4,030 million), premised on a recovery in earnings in the second half
  • Intensifying competition from low-priced VOC Concentrators offered by local Chinese manufacturers
  • Mid- to long-term risk of a slowdown in growth of the EV lithium-ion battery industry and the risk of the spread of alternative coatings that do not contain VOCs
  • Foreign exchange risk (a foreign exchange loss of ¥72 million was recorded in the same period of the prior year, turning into a foreign exchange gain of ¥19 million in the current period, but volatile exchange rate conditions continue)

Last updated: March 26, 2026