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Based in Japan with a global vision, we create a sustainable world in partnership with our clients.

We drive positive change and foster a future built on sustainability.

A Company that Makes an impact. It Makes their Clients to Make An impact.

Our Mission: To be the catalyst for positive environmental and sustainability impacts, driving sustainable growth for our clients on a global scale.

.Profile

01: Corporate Profile

Nature of Business: DEISO LLC specializes in providing diverse services and solutions to promote and enhance environmental performance, sustainability, sustainable development, technological innovation, and human resource development. The company’s core business offerings include:

a: Environmental Engineering and Sustainability Services and Solutions: Offering comprehensive services and solutions encompassing assessment, management, planning, development, consulting, and project execution.

 
 
 
 
 
 

b: Environmental Qualification and Certification: Issuing environmental qualification and certification.

 
 
 
 
 
 

c: Research and Development (R&D): Providing innovation through research and development.

 
 
 
 
 
 

d: Human Resource Development and Training: Offering certified training programs tailored to human resource development for organizations and individuals.

e: IT Services, Software Development, and Cloud Services: IT services, cloud solutions, and computer software product development. The company’s offerings include developing, selling, and reselling software, digital tools, and data.

f: Related Business Ventures: engaging in any business activities incidental to or related to the company’s offerings.

 
 
 
 
 
 
Corporate Number: 4370003005121

02: The official name in Japanese

合同会社 DEISO

03: The official name in English

DEISO LLC.

04: Establishment Date

February 19, 2021

05: Address

DEISO LLC., Floor 21 Shiodome Shibarikyu Building, 1-2-3 Kaigan Minato-ku, Tokyo 105-0022 Japan

06: Company bank

Mizuho Bank, Ltd

07: E-mail address

os.ie1749310600d@ofn1749310600i1749310600

08 : Tel

03-5403-6479

09: Domain Name

Primary: dei.so
Secondary: www.deiso.co.jp & www.deiso.jp

Inquiries?

Have any inquiries, please feel free to reach us at pj.oc1749310600.osie1749310600d@ofn1749310600i1749310600

💡 Have a question? Ask Sora AI — your personal DEISO assistant.

Looking for advanced results? Try Mirai AI Pro.

Featured Clients

Trusted worldwide for sustainability services, solutions, and training in 35+ country.

Discover your ideal solution or ask Mirai, our AI-powered assistant, for personalized recommendations tailored to your business or specific challenges.

DEISO
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Contact Info.

English Address:
Level 21 Shiodome Shibarikyu Building
1-2-3 Kaigan, Minato-ku
105-0022 Tokyo, Japan.

Japanese Address:
〒105-0022 東京都港区海岸1-2-3
汐留芝離宮ビルディング21階, 合同会社DEISO.

Phone (JP): 03-5403-6479 / 0488-72-6373
Phone (EN): 070-6969-7700
Fax: 03-5403-6475 / 0488-72-6373
Email: os.ie1749310601d@ofn1749310601i1749310601

Latest News

🆘 DEISO Quick Help & Support Center

🛠️ How to Seek Help from the DEISO Website

🔍 Search Assistance
  • Use Ctrl+Shift+D on any Windows or Mac device to launch our global site search with autocomplete.
  • On both desktop and mobile, click the search icon at the left center edge of the screen to open the same powerful search tool.
  • For detailed exploration, visit our Advanced Search page:
    👉 https://dei.so/advanced-search

🤖 Ask AI for Instant Support

💬 Connect with the DEISO Team

📧 Email Us

🧾 Submit a Support Ticket

📶 Check Platform & Website Status

📚 Need More Help?
  • Visit our Frequently Asked Questions (FAQ):
    👉 https://dei.so/faq
  • Explore our full Help Center:

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