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Based in Japan. Delivering Global Sustainability Impact.

Partnering with organizations worldwide to drive measurable environmental performance and build future-ready sustainability systems.

Driving Impact. Enabling Clients to Deliver Impact.

Our mission is to act as a catalyst for measurable environmental and sustainability performance, empowering organizations to achieve sustainable growth at a global scale.

.Profile

01: Corporate Profile

Nature of Business: DEISO LLC provides specialized environmental sustainability consulting, technical advisory, digital solutions, and professional training services aimed at improving environmental performance, carbon management, and sustainability governance across organizations and institutions.

The company’s core business activities include, but are not limited to:

a: Environmental Engineering and Sustainability Services and Solutions: DEISO LLC provides comprehensive environmental engineering and sustainability services, covering assessment, analysis, system development, strategic planning, and technical advisory across a wide range of environmental and sustainability domains.

These services are designed to support organizations in improving environmental performance, strengthening sustainability governance, and implementing structured, data-driven solutions aligned with international standards and operational requirements.

b: Environmental Qualification and Certification Support: DEISO LLC provides technical support, advisory services, and structured preparation for environmental qualification and certification processes, including documentation development, methodological alignment, and readiness assessment in accordance with applicable standards and frameworks.

c: Research and Development (R&D): DEISO LLC conducts research and development activities focused on advancing environmental sustainability methodologies, digital solutions, and data-driven systems, including environmental modeling, carbon analytics, and AI-enabled sustainability applications.

d: Human Resource Development and Training: DEISO LLC provides professional training programs and capability development services designed to strengthen technical skills, sustainability knowledge, and organizational capacity across environmental and sustainability domains.

e: IT Services, Software Development, Artificial Intelligence (AI), and Cloud Services: DEISO LLC provides IT services, software development, AI-enabled solutions, and cloud-based systems tailored to environmental sustainability applications, including data platforms, analytical tools, and digital intelligence systems.

The company’s activities include the design, development, deployment, licensing, and commercialization of software products, digital tools, and data-driven solutions supporting environmental analysis, carbon management, and sustainability performance.

f: Related Business Ventures: DEISO LLC may engage in any lawful business activities that are incidental, complementary, or related to its core operations, including the expansion of services, solutions, and technological offerings within environmental sustainability, digital systems, and associated fields.

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

info@dei.so

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 info@deiso.co.jp

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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: info@dei.so

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