---
title: Establishment of HainuTech Holdings Co., Ltd. and Transition to a New Group Structure
description: ROCKY-ICHIMARU Co., Ltd. hereby announces that it has established a holding company, HainuTech Holdings Co., Ltd., effective April 1, 2026, and has transitioned to a new group structure.
image: https://www.rocky-ichimaru.co.jp/hubfs/%E8%A6%8B%E5%87%BA%E3%81%97%E3%82%92%E8%BF%BD%E5%8A%A0%20(1).png
---

 ROCKY-ICHIMARU Co., Ltd. hereby announces that it has established a holding company, HainuTech Holdings Co., Ltd., effective April 1, 2026, and has transitioned to a new group structure.

ROCKY-ICHIMARU Co., Ltd. hereby announces that it has established a holding company, HainuTech Holdings Co., Ltd., effective April 1, 2026, and has transitioned to a new group structure.

## **Purpose of the Transition**

HainuTech Holdings has been established to strengthen group management functions and enhance collaboration among group companies.

Through this transition, the group aims to improve operational efficiency and further develop its technological capabilities by integrating the technologies and expertise of each company.

## **Group Structure**

Under the new structure, HainuTech Holdings serves as the holding company, overseeing the following group companies:

- [ROCKY-ICHIMARU Co., Ltd.](https://www.rocky-ichimaru.co.jp/en/)
- [Shinei Seiko Co., Ltd.  (Japanese only)](https://shineiseikou.info/)
- [WinTech Co., Ltd. (Japanese only)](https://wintech-chino.co.jp/)
- [KONNOPRO Co., Ltd. (Japanese only)](https://www.konno-pro.jp/)
- [Ohyama Foods Machinery Co., Ltd.](https://ofmac.com/english.html)

ROCKY-ICHIMARU continues to operate as a core operating company within the Group.

## **Continuity of Business Operations**

This transition does not affect existing business relationships or operations:

- No changes to contracts or business terms
- No changes to ordering, billing, or payment procedures
- No changes to points of contact

All services and communications will continue as before.

---

## **Overview of HainuTech Holdings Co., Ltd.**

- **Company Name:** HainuTech Holdings Co., Ltd.
- **Date of Establishment:** April 1, 2026
- **Head Office:** 601 Oaza Tsunemochi, Chikugo City, Fukuoka, Japan
- **Business Activities:** 
    - Group management and administration
    - Corporate strategy formulation
    - M&A oversight and execution
    - Back-office service operations
    - Capital procurement and management
    - Human resource development
- **Website:**  
  [https://www.hainutech.co.jp/](https://www.hainutech.co.jp/)  
  **Currently available in Japanese only.*

## **Additional Information**

For more detailed information regarding the group structure transition, please refer to the following document:

- [**Notice of Establishment of HainuTech Holdings and Group Structure Transition (PDF)**](https://www.rocky-ichimaru.co.jp/hubfs/RKI_HainuTech_Notice_EN%20(1).pdf)

## **Contact**

ROCKY-ICHIMARU Co., Ltd.  
Administration Department (Attn: Mr. Miyashita)  
TEL: +81-942-53-7510  
Email: s.miyashita@rocky-ichimaru.co.jp

 

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