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Selected Client Portfolio

Trusted by Global Enterprises, Industrial Groups, and Research Institutions

DEISO is an execution-driven technical consultancy engaged by leading enterprises, multinational industrial groups, and world-class research institutions across global markets.

Enterprise-Grade Execution

Technical work delivered for major industrial, energy, manufacturing, construction, and environmental organizations.

Global Institutional Reach

Engagements across East Asia, the Gulf, Europe, and international applied research environments.

Industry + Research Interface

Work positioned at the intersection of industrial-scale implementation and rigorous applied sustainability research.

International Technical Engagements

DEISO’s client portfolio reflects an international footprint spanning the energy, oil and gas, advanced materials, manufacturing, packaging, construction, and environmental sectors, alongside sustained engagements with universities and applied research bodies.

Among the largest enterprises that have engaged DEISO to execute technical work are Saudi Arabian Oil Company (Aramco) and Petroliam Nasional Berhad (PETRONAS) — two of the world’s foremost energy corporations — together with Saudi Energy / Saudi Electricity Company, DuPont de Nemours, Inc., Teijin Limited, Yazaki Corporation, GS Caltex Corporation, Taghleef Industries, Swegon Group AB, and Alliance Construction Materials Limited.

These engagements reinforce DEISO’s standing as an execution-led firm capable of delivering technical work at the scale, rigor, and reliability expected by major corporations, strategic operators, and advanced industrial organizations.

Enterprise and Academic Credibility

DEISO’s reach extends across both industry and academia. On the academic side, the firm has executed engagements for distinguished research universities, including The University of Tokyo, Seoul National University, the Indian Institute of Technology Delhi, Nanyang Technological University Singapore, and Technische Universität Dresden, alongside established institutions across Europe, the Gulf, and East Asia.

This dual presence across enterprise and academic clients reflects DEISO’s capacity to operate at the intersection of industrial-scale execution and rigorous applied research, delivering work that meets the standards of both commercial and scientific environments.

Energy, Industry, and Manufacturing

Selected enterprise and industrial organizations that have engaged DEISO.

  • Saudi Arabian Oil Company (Aramco)
  • Petroliam Nasional Berhad (PETRONAS)
  • Saudi Energy / Saudi Electricity Company
  • DuPont de Nemours, Inc. (DuPont)
  • Teijin Limited
  • Yazaki Corporation
  • GS Caltex Corporation
  • Taghleef Industries
  • Swegon Group AB
  • Alliance Construction Materials Limited
  • Encory GmbH
  • Fixing Solutions GmbH
  • Inter Construction
  • CIFE Water & Energy, Tunisia

Universities and Research Institutions

Selected academic and applied research institutions served by DEISO.

  • The University of Tokyo (UTokyo)
  • Seoul National University (SNU)
  • Indian Institute of Technology Delhi (IIT Delhi)
  • Nanyang Technological University, Singapore (NTU Singapore)
  • Technische Universität Dresden (TU Dresden)
  • Gdańsk University of Technology (Politechnika Gdańska)
  • University of Doha for Science and Technology (UDST)
  • Özyeğin University (Özyeğin Üniversitesi)
  • Sookmyung Women's University
  • Kwangwoon University
  • Republic Polytechnic, Singapore
  • Technological University of the Shannon: Midlands Midwest (TUS)

Environmental, Technical, and Advisory Organizations

Selected organizations across environmental, technical, innovation, and advisory sectors.

  • World Wide Fund for Nature (WWF)
  • Centre Technique des Industries Mécaniques (CETIM)
  • SLR Consulting
  • Seedstars
  • One Point Five
  • E-Cube Consulting
  • Inspekta

DEISO’s client portfolio demonstrates a rare combination of enterprise execution capacity, technical depth, international reach, and applied research credibility — supporting organizations that require sustainability work to be technically robust, commercially relevant, and decision-ready.

Trusted by Global Organizations

Supporting sustainability execution across 35+ countries

Identify the right solution for your organization, or consult Mirai AI Pro — DEISO's intelligent assistant — for tailored recommendations aligned to your operational context and technical challenges.

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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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