Building on tradition,
advancing the future through technology.
Takatori Group Holdings integrates its cultivated core technologies
—from casting to mechatronics
—to create new value as a corporate group committed to continuous, sustainable evolution.
News
- Updated April 11, 2026Takatori Group Holdings will exhibit at Sea Japan 2026.
Message
Building on a 400-year legacy,
we continue to pursue the creation of new value.
Takatori Group Holdings Co., Ltd.
Representative Director & CEO
Kojiro Fujiyama
Takatori Manufacturing Co., Ltd. has continued its journey as a manufacturing enterprise for over 80 years since its founding in Yoshii-machi, Ukiha City, Fukuoka Prefecture. This legacy traces back even further—over 400 years—to the metal casting artisans of the Tachibana Domain in what is now Yanagawa City, forming a long-standing lineage of craftsmanship.
Building on the technologies and trust cultivated through this history, we remain committed to sincere manufacturing while continuously challenging ourselves to create new value.
At the core of our group is Takatori Manufacturing, working in close collaboration with TCAST Co., Ltd., Hawk Mechatronics Co., Ltd., Automize Lab Co., Ltd., and Hara Alloy Co., Ltd. Each company contributes its specialized expertise: TCAST and Hara Alloy in casting technologies; Hawk Mechatronics in machinery and equipment; and Automize Lab in automation and system development. Together, we form an integrated technological foundation that connects core capabilities—from casting to mechatronics control—enabling consistent value creation.
We extend these core technologies beyond the group through partnerships, promoting “co-creative innovation” that generates new value. In the maritime sector, we address critical social challenges—including decarbonization, labor reduction, safety assurance, and stable operations—by integrating the specialized strengths of each company into new, synergistic combinations.
Furthermore, we pursue both technological and broader societal value, including contributions to culture and the arts. By embracing serendipity, we actively explore new possibilities. We are also committed to identifying and developing the next generation of leaders who will shape the future of our organization.
By leveraging the strengths of each group company and integrating technologies both within and outside the group, we strive to create value that transcends conventional boundaries—this defines the vision of Takatori Group Holdings.
While cherishing our deep ties to our founding region, including Yoshii-machi in Ukiha City, we will continue to build on over 400 years of tradition as we take on new challenges toward the next century. With a unique management foundation—combining the flexibility of a privately held structure aligned with economic security considerations, the growth orientation of publicly listed operating companies, and the continuity of a family business—we aim to become a company admired and supported by people around the world.
Mission & Vision
Mission
Rooted in tradition,
we spark innovation through sincere action and serendipity
—creating lasting prosperity for the world and the future.
Vision
Connecting core technologies
—from casting to mechatronics control
—to grow as a sustainably evolving mid-sized enterprise group.
Our History
1600s
The origins of our manufacturing heritage trace back to the 1600s, rooted in the craft of metal casting artisans of the Tachibana Domain in Yanagawa, Fukuoka Prefecture.
1944
Founding of the modern company
Takatori Seisakusho Co., Ltd. is established.
Production of valves for government and public-sector vessels begins.
Postwar–High Economic Growth Period
Establishing the business foundation
Accumulation of engineering expertise in marine valve technology, building strong trust primarily in the public-sector market.
2000s – Advancement of Core Technologies
Enhancement of copper alloy casting and machining capabilities.
Strengthening an integrated production system from materials to finished products.
TCAST (casting technology)
Hawk Mechatronics (precision machining and assembly)
2020
Expansion into digital transformation and control systems
Automize Lab Co., Ltd. is established.
Entry into automation business through retrofit solutions.
Development of Valve Automizer® / Suimon Bot®
2025
Establishment of a group management structure
Takatori Group Holdings Co., Ltd. is founded.
Integration of Takatori Seisakusho, TCAST, Hawk Mechatronics, and Automize Lab under a unified group structure.
Present
Evolution toward the next generation
Building on 400 years of heritage, we have established an integrated value chain spanning casting to mechatronic control, and continue to pursue sustainable growth and long-term development.
Company Profile
Company Profile
| Company Name | Takatori Group Holdings Co., Ltd. |
|---|---|
| Representative Director & CEO | Representative Director & CEO Kojiro Fujiyama |
| Locations |
|
| Business Overview | Manufacturing and sales of marine valves, strainers, automation equipment, and various outfitting components. |
| Number of Employees | 102 (as of December 2025) |
| Annual Sales | ¥4.4 billion (as of September 2025) |
| Corporate Number | 6290001053161 |
| Web | https://takatorigroup.com/ |
Group companies
Guided by the principle of “dedication to a single industry,” we practice sincere and honest manufacturing.
Takatori Seisakusho was founded in 1944. Even amid the postwar turmoil, the company was established with the aim of securing work opportunities and building steady progress together with the local community living within view of Mt. Takatori. With this vision, the company began its journey and has continued its operations for more than 70 years in Yoshiimachi, Ukiha City (formerly Yoshii Town), at the foothills of Mt. Takatori in Fukuoka Prefecture.
This long-standing continuity is a testament to the trust placed in us by customers and suppliers who have supported our business over many years. We regard fulfilling this trust as the very reason we continue to dedicate ourselves to sincere and honest manufacturing.
Today, we provide marine component supply and repair services through our valve, strainer, and automation equipment businesses. While consistently focusing on the maritime sector since our founding, we continue to pursue growth strategies in response to the rapidly changing shipbuilding industry, aiming to contribute to the prosperity and peace of Japan as an enterprise committed to long-term development.
| Company Name | Takatori Seisakusho Co., Ltd. |
|---|---|
| Location |
|
| Web | https://www.taka-tori.co.jp/ |
The core of material innovation supporting group quality
TCAST Co., Ltd. is a materials innovation company specializing in copper alloy casting, serving as the upstream core of the Takatori Group’s integrated manufacturing value chain.
With its origins in a casting tradition spanning more than 400 years—traced back to Hirai Kogyo Co., Ltd., the predecessor of Takatori Group Holdings—TCAST builds upon over 80 years of refined casting expertise developed within Takatori Seisakusho. Today, it forms the foundation of highly reliable components required for government marine valves and industrial equipment.
This technical heritage has been continuously advanced through the direct participation of skilled casting engineers and hands-on knowledge transfer in the production field. By combining traditional craftsmanship with digital analysis using 3D CAD and CAE simulation, TCAST embeds quality at the casting stage itself, enabling highly precise and stable product supply.
The company is also engaged in research and development of hydrogen-compatible materials, and through close integration with the group’s machining and assembly functions, it delivers a fully integrated production system that responds to increasingly diverse industrial needs.
As the starting point of the Takatori Group’s technological chain—from casting to mechatronic control—TCAST continues to support sustainable technological evolution.
| Company Name | TCAST Co., Ltd. |
|---|---|
| Location | 1916-11 Tominaga, Yoshiimachi, Ukiha City, Fukuoka 839-1321, Japan |
| Primary Function | Casting (material manufacturing) |
| Process Stage | Upstream process (creating components from raw materials) |
| Areas of Expertise | Production of copper alloys, mold design, CAE simulation, and manufacturing of high-precision castings. |
The core of precision machining and control that completes product value
Hawk Mechatronics Co., Ltd. is a manufacturing core company within the Takatori Group, specializing in precision machining and assembly technologies and responsible for downstream processes.
It provides integrated manufacturing from high-precision machining of copper alloy castings through to final product assembly, producing highly reliable products such as marine valves and strainers for government and public-sector vessels. Operating under a stringent quality management system based on ISO 9001, the company meets advanced requirements in defense and critical infrastructure sectors.
It also plays a central role in the group’s growing automation business, driving the manufacturing and assembly of electromechanical products such as Valve Automizer systems, where mechanical engineering is integrated with electronic control.
By combining precision machining with mechatronic control, the company serves as the entity that completes product value, supporting the overall competitiveness of the group.
| Company Name | Hawk Mechatronics Co., Ltd. |
|---|---|
| Location | 171 Yoshiimachi, Ukiha City, Fukuoka 839-1321, Japan |
| Primary Function | Machining and assembly (final finishing) |
| Process Stage | Downstream process (shaping and completing the product) |
| Areas of Expertise | Precision machining, assembly of valves and strainers, and manufacturing of automation equipment. |
Enabling simple automation by installing Valve Automizer® on manual valves
Most equipment and machinery used across various industries still requires manual operation. In the past, when customers sought to automate such systems, the conventional approach was to replace existing equipment entirely with new automated systems. This often resulted in high costs and long lead times, becoming a significant barrier to automation.
Automize Lab provides a unique “retrofit automation” solution, including the Valve Automizer® and Bot series, enabling existing equipment to be upgraded into automated systems without full replacement. Through these solutions, we address customers’ challenges in achieving practical and cost-effective automation.
| Company Name | Automize Lab Co., Ltd. |
|---|---|
| Location | 1-11-8 Tanotsu, Higashi-ku, Fukuoka City, Fukuoka 813-0034, Japan |
| Primary Function | Automation systems and automation equipment. |
| Web | https://automize.co.jp/en/ |
Manufacture of industrial cast products, marine components, and castings for playground equipment
We manufacture industrial cast products such as machine parts, marine components, and various equipment-related castings for business applications.
| Company Name | Hara Gokin Co., Ltd. |
|---|---|
| Location | 5-1-18 Minami-ri, Shime Town, Kasuya District, Fukuoka 811-2207, Japan |
| Web | https://www.big-advance.site/c/183/1449 |