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DEISO

What are Material Flow Analysis (MFA) and Substance Flow Analysis (SFA)?
Aerial view of colorful shipping containers at port.
Blog Posts
What are Material Flow Analysis (MFA) and Substance Flow Analysis (SFA)?
DEISO

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Life Cycle Assessment: A Getting Started Guide
Green bicycle above world map illustration.
Blog Posts
Life Cycle Assessment: A Getting Started Guide
DEISO

.deiso-conv-wrap{ max-width:1100px; margin:0 auto; padding:60px 20px; font-family:Arial, Helvetica, sans-serif; background:#ffffff; color:#222222; } .deiso-conv-section{ margin-bottom:60px; } .deiso-conv-section h4{ font-size:30px; line-height:1.35; color:#00a62d; font-weight:700; margin:0 0 16px 0; } .deiso-conv-section p{ font-size:20px; line-height:1.8; color:#333333; margin:0 0 18px 0; } .deiso-conv-grid{ display:grid; grid-template-columns:repeat(2, minmax(0, 1fr)); gap:26px; margin-top:24px; } .deiso-conv-card{ background:#ffffff; border:1px solid #e4ebf2; border-radius:16px; padding:26px; box-shadow:0 10px 24px rgba(0,0,0,0.06); } .deiso-conv-card h5{ font-size:22px; line-height:1.45; color:#000000; font-weight:800; margin:0 0 12px 0; } .deiso-conv-card p{ font-size:18px; line-height:1.75; color:#444444; margin:0; } .deiso-conv-cta-wrap{ margin-top:24px; } .deiso-conv-btn{ display:inline-block; padding:18px…

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Introducing the Environmental Product Declaration (EPD)Training Programs
EPD training programs and urban sustainability.
Updates
Introducing the Environmental Product Declaration (EPD)Training Programs
DEISO

Introducing EPD training programs: We now provide Environmental Product Declaration (EPD) Training Programs of "Professional" and "Advanced." Choose the one that best meets your requirements. Perform EPD Calculations in an LCA software: You can choose from GaBit, SimaPro, or openLCA (free software)—you can select the software you have a license for or the free openLCA software. In addition to basic LCA training, the program comes with several unique features. You can compare the two programs at

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New Life Cycle Assessment (LCA) Training Programs are Now Available
Green bicycle promoting life cycle assessment training.
Announcements
New Life Cycle Assessment (LCA) Training Programs are Now Available
DEISO

/*! elementor - v3.23.0 - 05-08-2024 */ .elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block} We are excited to announce the launch of our new Life Cycle Assessment (

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We are hiring a Senior Administrative and Technical Assistant (urgently)
Hiring: Senior Administrative and Technical Assistant at DEISO.
Jobs
We are hiring a Senior Administrative and Technical Assistant (urgently)
DEISO

Senior Administrative and Technical Assistant (Job ID: DSJOB2218) Important Note: To be considered for this position, a candidate must reside in Tochigi city, Japan, and possess complete Japanese proficiency and business-level English. Japanese-English interpretation skills are required. Applications must be submitted via email to jobs.dei.so along with a complete CV and cover letter. This is an onsite job (not remote or hybrid work). Apply Basic Information Job Title: Senior Administrative and Technical Assistant Job Description: We urgently seek a Senior…

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Achieving a Recycling-Oriented Society
Thumb up for recycling-oriented society concept illustration.
Blog Posts
Achieving a Recycling-Oriented Society
DEISO

/*! elementor - v3.23.0 - 05-08-2024 */ .elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}An In-Depth Look at the Relationships Between Circular Economy, Environment, Social, and Governance (ESG), and Recycling Technologies Transitioning to a circular economy will be critical to achieving a more sustainable future for a Recycling-Oriented Society. Actions such as technological evaluation from environmental, technical, and feasibility assessment of investment and planning for waste prevention, reduction, reuse, and recycling materials may dramatically cut yearly greenhouse gas (GHG) emissions. Suppose…

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Our Circular Economy services now have detailed info available.
Circular economy: Reuse resources, minimize waste, improve efficiency.
News Updates
Our Circular Economy services now have detailed info available.
DEISO

  DEISO offers 10+ services for Circular Economy (CE) and how to help for the transition to CE. Information about our CE services is now available via this at

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We have released a detailed article about GHG Scope 3 emissions & our services for Scope 3.
Scope 3 Emissions services and solutions by DEISO.
News Updates
We have released a detailed article about GHG Scope 3 emissions & our services for Scope 3.
DEISO

We have made extensive information about Scope 3 GHG emissions accounting and the services we provide for Scope 3 GHG accounting available to the public. The article can be accessed

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Scope 3 GHG Emissions – All You Need to Know & What We Offer?
Global transportation logistics with airplane, ship, and truck
Blog Posts
Scope 3 GHG Emissions – All You Need to Know & What We Offer?
DEISO

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Notice of changing our business hours
Business hours update calendar with galaxy background
Announcements
Notice of changing our business hours
DEISO

The new business hours: 9 am - 5:30 pm, JST Monday-Friday. Our hours have been changed from "9 am - 5 pm" to "9 am - 5:30 pm"—Japan Standard Time (JST), Monday through Friday (except national holidays). A gentle reminder: We still offer the training on Saturdays and Sundays for our clients outside Japan who take remote training services. However, we would like to remind our clients that we do not respond to questions via email or phone on Saturdays and Sundays.…

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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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Engineering the Future of Sustainable Performance

Execute Sustainability Projects
Full technical responsibility for LCA, Scope 3, PCF, and EPD execution under real-world conditions.
Initiate Technical Audit
Identify data gaps, inconsistencies, and risks before submission or verification.
Start Rapid Review (48–72h)
Stabilize time-sensitive sustainability work and reduce technical risk under tight deadlines.
Access Compliance Support
Structured execution aligned with regulatory, disclosure, and standards requirements.
View Solutions
Integrated sustainability systems combining execution, intelligence, and digital infrastructure.
View Services
Full portfolio across LCA, GHG, ESG, PCF, EPD, and technical validation.
View Case Studies
Real project execution and technical outcomes across industries and regions.
Ask DEISO AI
Identify the right execution pathway using AI-assisted sustainability intelligence.
Find the Right Service
Match your project scope with the appropriate execution or validation service.
Request Project Proposal
Submit your requirements for a structured proposal aligned with your technical scope.
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