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Founded Ryoshin Electric Ltd.
Reorganized into a corporation and established Ryoshin Electric Co., Ltd.
Established Ryoyo Electric Co., Ltd.
Established Ryoshin Trading Co., Ltd.
Established Hong Kong Ryosan Limited.
Established Singapore Ryosan Private Limited.
Established Ryotai Corporation.
Changed company name to Ryosan Co., Ltd.
Listed on the Second Section of the Tokyo Stock Exchange.
Changed company name to Ryoyo Electro Co., Ltd.
Reclassified to the First Section of the Tokyo Stock Exchange: Listed on the Second Section.
Re-designated to the First Section of the Tokyo Stock Exchange.
Listed on the Second Section of the Tokyo Stock Exchange.
Absorbed and merged Ryoshin Trading Co., Ltd.
Established Ryoyo Electro Singapore Pte., Ltd.
Reclassified to the First Section of the Tokyo Stock Exchange market.
Established Ryosan Technologies USA Inc. and Ryoyo Electro Hong Kong Limited.
Established Ryosan Technologies USA Inc.
Established Ryoyo Electro Hong Kong Limited.
Established Zhong Ling International Trading (Shanghai) Co., Ltd. and Ryoyo Electro USA, Inc.
Established Zhong Ling International Trading (Shanghai) Co., Ltd.
Established Ryoyo Electro USA, Inc.
Established Ryosan Electronics Co., Ltd. (Taiwan).
Established Korea Ryosan Corporation.
Established Korea Ryosan Corporation: Established Ryosan (Thailand) Co., Ltd.
Established Ryosan (Thailand) Co., Ltd.
Established Ryosan IPC (Malaysia) Sdn. Bhd.
Established Ryosan IPC (Malaysia) Sdn. Bhd.: Established Dalian F.T.Z Ryosan International Trading Co., Ltd.
Established Dalian F.T.Z Ryosan International Trading Co., Ltd.
Established Ryoyo Electronics (Shanghai) Co., Ltd.
Established Ryoyo Semicon Co., Ltd.
Established Ryoyo Electro (Thailand) Co., Ltd.
Established Ryosan Europe GmbH
Established Ryosan India Private Limited
Established Ryoyo Electro India Pvt. Ltd.
Made Edal Electronics Company Limited a wholly-owned subsidiary
Made Edal Electronics Company Limited a wholly-owned subsidiary: Invested in IO Core Co., Ltd.: Invested in Qingdao San Yuan Taike Electronics Technology Co., Ltd.
Invested in IO Core Co., Ltd.
Invested in Qingdao San Yuan Tai Ke Electronic Technology Co., Ltd.
Established Ryoyo Electro Europe GmbH
Established Ryoyo Electro Europe GmbH: Established Ryoyo Electro (Malaysia) Sdn. Bhd.
Established Ryoyo Electro (Malaysia) Sdn. Bhd.
Made Styles Co., Ltd. a consolidated subsidiary
Transitioned to the Tokyo Stock Exchange Prime Market: Transitioned to the Tokyo Stock Exchange Prime Market
Transition to the Tokyo Stock Exchange Prime Market : Transition to the Tokyo Stock Exchange Prime Market : Invested in YAMASEI TECH CO., LTD : Invested in PREEKEN Co., Ltd.
Transitioned to the Tokyo Stock Exchange Prime Market.
Invested in YAMASEI TECH CO., LTD.
Invested in PREEKEN Co., Ltd.
Capital partnership with Ryoyo Electro Co., Ltd.: Applied equity method to Ryosan Co., Ltd. as an affiliated company
Signed a basic agreement to establish a joint venture with IAT Automobile Technology Co., Ltd.
Signed a basic agreement on management integration
Signed the final agreement on management integration through the establishment of a joint holding company
Capital partnership with Ryosan Electro Co., Ltd. : Ryosan Co., Ltd. becomes an associate under the equity method : Basic agreement signed for joint venture establishment with IAT Automobile Technology Co., Ltd. : Signed a basic agreement on management integration : Signed the final agreement on management integration through the establishment of a joint holding company.
Capital partnership with Ryosan Electro Co., Ltd.
Ryosan Co., Ltd. becomes an associate under the equity method.
Established Ryosan Ryoyo Holdings Co., Ltd.: Newly listed on the Tokyo Stock Exchange Prime Market
Establishment of Ryosan Ryoyo Holdings Co., Ltd.
Listed on the Tokyo Stock Exchange Prime Market
Merged Ryosan Co., Ltd. and Ryoyo Electro Co., Ltd.: Established Ryosan Ryoyo Co., Ltd.
Ryosan Co., Ltd. and Rihsyo Electro Co., Ltd. merged
Formation of Ryosan Rihsyo Co., Ltd.
RyoSan Hishio Co., Ltd. has entered into an agency agreement with Taiwanese semiconductor manufacturer MediaTek. The partnership aims to promote the use of Physical AI in automotive and industrial equipment sectors, thereby enhancing the competitiveness of domestic manufacturing.
RyoSan Hishiyou will exhibit at the largest embedded and edge technology exhibition in Japan, "Edge Tech+2026," held from November 18 to 20, 2026, at Pacifico Yokohama. The exhibition focuses on themes such as AI-driven design philosophy, secure by design, and resilient supply chain construction, providing stakeholders with new growth perspectives and business opportunities by offering an overview of the embedded ecosystem. Within the booth, partner companies centered on product security will set up small booths, and short seminars are also scheduled.
Ryosan Hishiyou expanded its human resource development menu for corporate implementation support programs and began offering the "Physical AI Introductory Package" in October 2026. We provide an environment where users can learn the basics of Physical AI on real equipment, promoting AI talent development in the manufacturing industry.
We would like to inform you that the Ryosan Rihyou Tech Lab, which was suspended from around 11:30 on October 22, 2026, due to vulnerability remediation, has completed the remediation and is now available for use as usual. We apologize for any inconvenience and trouble caused.
The owned media site "Ryosan Hiyoshi Tech Club" operated by our company is temporarily suspended from public access due to maintenance. We apologize for any inconvenience to our users and ask you to please wait until the maintenance is completed.
Due to addressing a vulnerability, the corporate site, which was temporarily suspended around 11:30 AM on October 22, 2026, was restored around midnight that same day, and is now available as usual. We apologize for any inconvenience caused to users.
Ryosan Rihyo supported Tokyo Electron in enhancing product security. Regarding semiconductor manufacturing equipment, a critical industrial infrastructure that supports the supply chain, they strengthened defenses against cyber attacks and achieved improved product safety.
Ryosan Hoshiyou co-hosts with NVIDIA and will hold a webinar from 2:00 PM on October 29, 2026. The webinar will explain the latest technologies and market trends of the "NVIDIA GTC Berlin 2026" held in Berlin, featuring NVIDIA's Riki Sawai as a guest. The theme is infrastructure and software operation strategy in the AI Factory era.
Ryosan Rihyo Co., Ltd. provided an edge AI computing module, including the NVIDIA® Jetson AGX Orin™ series, to the AI basketball robot "CUE7" being developed by Toyota Motor Corporation's Future Creation Center. CUE7 autonomously recognizes and controls the environment and ball, and researches robotics technology that performs dribbling. Its small size, lightweight, and ability to perform real-time high-precision recognition were evaluated and led to its adoption.
On October 1, 2026, we held an offer ceremony welcoming the candidates scheduled to join next spring. President Nakamura delivered a welcome speech, and the candidates listened attentively with serious expressions. After the ceremony, there were informal discussions and interviews, during which the candidates shared their impressions and aspirations.