The Corona Group, located in Ueda City, Nagano Prefecture, is a general construction company composed of three companies: Corona Giken, which builds factories and large warehouses; Corona Jyutaku, which builds custom-built homes; and Corona Architecture and Civil Engineering Technology Research.

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The site provides information and resources related to the COVID-19 pandemic response and preventive measures.

We are a publishing company that publishes specialized books related to natural sciences, walking alongside science and technology. We provide comprehensive book information, including new and upcoming publications, announcements from Corona Publishing, and information for textbook adopters, corporations, and bookstores.

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We are the official domestic distributor of brands such as forte_forte, mila schon, lucien pellat-finet, and MooRER.

News More Business Achievement supports individuals and organizations in achieving their goals through educational consulting that creates human growth.

This is the corporate website of activo Inc., which operates activo, one of Japan's largest volunteer recruitment information sites.

This is the official corporate website of the All About Group. We introduce All About and other group company services and corporate information.

AlphaDrive aims to unlock people's potential, transform companies, and create a vibrant society by supporting new businesses, organizational, and human resource development for a wide range of companies and organizations.