News

Equity Participation in AIO precision Co., Ltd.

— Sustainable Growth for Regional Precision Manufacturing—Advancing Japan’s Machining Craftsmanship

Feb. 27, 2026

We are pleased to announce that Mitsui & Co., Principal Investments Ltd. (“MCPI”, Head Office: Chiyoda-ku, Tokyo, President and CEO: Nobuyuki Goto) has entered into a capital and business alliance with AIO Precision Co., Ltd. (“AIO Precision”, Head Office: Hanamaki City, Iwate Prefecture, President and CEO: Kazuhiro Oniyanagi) by acquiring 20% of its outstanding shares through an investment limited partnership managed by MCPI.

AIO Precision is one of Japan’s largest contract metal processing companies, with core strengths in precision machining, grinding, heat treatment, and surface treatment. The company serves a wide range of needs, including mechanical parts for factory automation (FA), mold components, and parts for prototyping and maintenance. Leveraging its integrated, one‑stop, in‑house production system—covering everything from machining and grinding to heat treatment and surface finishing—AIO Precision can flexibly accommodate high-mix, low-volume orders with short lead times while maintaining rigorous quality control and on-time delivery.

As a minority shareholder, MCPI respects the independence of AIO Precision’s management while working closely with the management team to jointly develop mid‑ to long‑term growth strategies. By providing hands‑on support, including support at the operational frontline, MCPI is committed to enhancing AIO Precision’s corporate value. Leveraging its management improvement expertise, human resources, and M&A capabilities, together with Mitsui & Co. Group’s network and domain expertise, MCPI will support AIO Precision in addressing its challenges and accelerating its growth. Under this alliance, building on AIO Precision’s core manufacturing capabilities, MCPI will work with the management team from a mid‑ to long‑term perspective to implement a range of initiatives, including: (1) expanding sales channels and the customer base (including entry into new industries and new customer development); (2) improving productivity and promoting digital transformation (DX); (3) strengthening corporate functions (including management systems, governance, and talent acquisition and development); and (4) evaluating and executing M&A transactions, while advancing these efforts in close collaboration with both the management team and AIO Precision’s employees.

Furthermore, as part of this alliance, MCPI will support initiatives to enhance AIO Precision’s corporate value through measures such as appointing non-executive directors and assigning on‑site personnel. AIO Precision’s current management team will continue to lead the company, while MCPI—respecting the management team’s existing policies—will serve as a long‑term growth partner and contribute to further strengthening of AIO Precision’s management foundation and core capabilities.

MCPI will continue to promote initiatives that support the sustainable growth of regionally rooted small and medium‑sized enterprises through both capital and hands-on management support.

For further information, please contact:

Nakamura
Phone: +81-80-6285-5055
E-mail: Hiron.Nakamura@mitsui.com

Kitamura
Phone: +81-80-5162-1530
E-mail: Mit.Kitamura@mitsui.com

Mitsui & Co., Principal Investments Ltd.