On December 26, 2025, our company announced the completion of the acquisition of 100% of the shares of Hiro Engineering Co., Ltd. (Headquarters: Takadanobaba 1-33-6, Shinjuku-ku, Tokyo), a subsidiary of Bestera Co., Ltd. (Code number: 1433, Tokyo Stock Exchange Prime, Headquarters: Koto-ku, Tokyo), and 3D Visual Co., Ltd. (1-6 Nakase, Mihama-ku, Chiba City, Chiba). With the addition of these two companies to our group, we will be able to provide seamless support from the acquisition of high-precision and large-scale 3D measurement data to plant piping design and mechanical design. Company Name: Hiro Engineering Co., Ltd. President: Akira Koike Capital: 27.5 million yen Annual Sales: 200 million yen (as of the end of January 2025) Number of Employees: 25 Website: https://hiro-eng.com/ Business Overview: Worker dispatch business, design contracting business Company Name: 3D Visual Co., Ltd. President: Akira Koike Capital: 27.5 million yen Annual Sales: 150 million yen (as of the end of January 2025) Number of Employees: 16 Website: https://3dv.co.jp/ Business Overview: 3D modeling business, design contracting business, analysis business

Thank you very much for your continued patronage. We are pleased to announce that we will be relocating our Osaka office to become the Kansai branch in order to expand our services in the Kansai area. We will strive even harder in construction surveying, layout marking, and 3D measurement services to meet your expectations. (New Address) 703 Room, NLC Nishinakajima Building No. 8, 3-9-13 Nishinakajima, Yodogawa-ku, Osaka City TEL: 06-6302-9121