ENVALITH
株式会社石川製作所 logo

Ishikawa Seisakusho, Ltd.

6208Standard MarketMachinery

株式会社石川製作所 logo
Ishikawa Seisakusho, Ltd.6208

Business

Ishikawa Seisakusho Co., Ltd. was founded in 1921 and is a manufacturing group based in Hakusan City, Ishikawa Prefecture. The group consists of five companies in total: the Company itself, its three consolidated subsidiaries (Kanto Kouki Co., Ltd., Issei Co., Ltd., and Ishimex Co., Ltd.), and Rengo Co., Ltd. The business is organized into four segments: "Defense Equipment" (Naval Mines, Avionics Equipment, etc.), "Paper Converting Machinery" (Corrugated Carton Box-Making & Printing Machinery, etc.), "Contract Manufacturing" (Contract Manufacturing of Various Machinery), and "Other" (Electronic Equipment, Textile Machinery, etc.). Major customers are the Ministry of Defense (52.2% of net sales) and Mitsubishi Heavy Industries, Ltd. (16.6% of net sales), with the Defense Equipment segment serving as the core business, accounting for approximately 76.8% of net sales of ¥18,473 million.

Business Model

In the Defense Equipment segment, the company records stable revenue centered on long-term contract-type products transferred over a certain period (FY2026 (ending March 2026) revenue recognized: ¥8,356 million, up 32.3% year on year), through continuous business with the Ministry of Defense, Mitsubishi Heavy Industries, Ltd., and others. In Paper Converting Machinery, the company sells equipment to the corrugated carton and paper converting industries, including Rengo Co., Ltd. Within the group, Issei Co., Ltd. manufactures machined parts, while Ishimex Co., Ltd. manufactures control panels and other electrical components, enhancing production efficiency through a division-of-labor system. Fund procurement relies mainly on borrowings from financial institutions.

Company Strengths

In FY2026 (ending March 2026), sales to the Ministry of Defense were ¥9,650 million (52.2% of net sales) and sales to Mitsubishi Heavy Industries, Ltd. were ¥3,063 million (16.6% of net sales), indicating a high degree of dependence on these two major customers, with whom continuous business relationships have been established. The order backlog at fiscal year-end stood at a high level of ¥23,011 million (Defense Equipment segment alone), providing high visibility into medium-term sales recognition.

Net sales in the Defense Equipment segment were ¥14,190 million (up 27.9% year on year), segment profit was ¥2,100 million (up 61.4% year on year), and the segment profit margin was 14.8% (improved from 11.7% in the previous fiscal year). The fixed-cost absorption effect accompanying the increase in net sales has become evident, and the expansion of sales recognition from long-term contract products has contributed to improved profitability.

Founded in 1921, the company obtained a business license for defense equipment manufacturing in 1954, and has accumulated over 70 years of manufacturing track record in Naval Mines, Avionics Equipment, and other products. A business license is required to manufacture Defense Equipment, which functions as a barrier to entry. The company invested a total of ¥399 million in research and development, comprising ¥205 million for Defense Equipment and ¥194 million for Paper Converting Machinery, and continues R&D activities in close collaboration with the Ministry of Defense.

ENVALITH's Perspective

For FY2026 (ending March 2026), operating profit reached ¥1,306 million (up 88.7% year on year) and ordinary profit reached ¥1,186 million (up 83.5% year on year), marking substantial profit growth for the second consecutive period. The operating profit margin on net sales reached 7.1%, the highest level in the past five fiscal periods. While the government's policy of increasing defense spending has served as an external tailwind, the main drivers of profit expansion have been the company's own progress in working through its order backlog and the effect of absorbing fixed costs, which can be evaluated as a structural improvement in profitability. The forecast for FY2027 (ending March 2027) (net sales of ¥19,000 million, operating profit of ¥1,000 million) points to a year-on-year decline in operating profit, and it will be necessary to assess whether this reflects conservative planning.

A structure has become clear in which increases in trade receivables (¥8,570 million) and contract assets (¥6,412 million) are being funded by short-term borrowings (¥11,100 million, up 47.8% year on year). The equity ratio declined to 22.7% (from 25.8% in the previous period), and financial leverage has increased. Operating cash flow was an outflow of ¥3,437 million (versus an outflow of ¥2,165 million in the previous period), negative for the second consecutive period, and continued attention is warranted regarding cash flow risk should progress in recognizing revenue from the order backlog stall.

The Paper Converting Machinery segment continued to struggle in FY2026 (ending March 2026), with net sales of ¥2,694 million (down 10.8% year on year) and a segment loss of ¥23 million (an improvement from the prior period's loss of ¥66 million, but still in the red). Order intake also declined to ¥1,982 million (down 22.3% year on year), reflecting the external factor of restrained capital expenditure in the corrugated cardboard and paper converting industries. As reliance on Defense Equipment for earnings increases, improving the profitability of Paper Converting Machinery is an essential challenge for enhancing the stability of the business portfolio over the medium to long term.

Growth Strategy

Steady conversion of the Defense Equipment order backlog into revenue, combined with cost reduction and stable dividends, to enhance corporate value

Against a backdrop of a high order backlog, the company continues to promote revenue recognition for long-term contract products (goods transferred over a certain period). Revenue of ¥8,356 million was recognized in FY2026 (ending March 2026), up 32.3% year on year. For FY2027 (ending March 2026), revenue of ¥19,000 million is planned, with Defense Equipment expected to continue driving growth.

The company continues to promote margin improvement through manufacturing process efficiency and cost reduction. The operating margin for FY2026 (ending March 2026) improved significantly to 7.1% (from 4.3% in the prior period). For FY2027 (ending March 2026), operating profit of ¥1,000 million is planned amid a narrowing pace of revenue growth, making continued cost management a key challenge.

A trust-type stock compensation plan approved at the Annual General Meeting of Shareholders in June 2025 has been introduced. This aims to strengthen the link between director compensation and share value, raising awareness of medium- to long-term performance improvement and corporate value enhancement. During the fiscal year under review, the company acquired ¥245 million (141,500 shares) of treasury stock to launch the plan.

The annual dividend per share for FY2026 (ending March 2026) is ¥20 (double the ¥10 of the prior period), with a payout ratio of 19.7%. For FY2027 (ending March 2026), a dividend of ¥20 per share (payout ratio of 19.6%) is planned, aiming to stabilize shareholder returns in line with profit growth.

Last updated: July 19, 2026