Toggle search modal
Toggle form modal
Toggle social modal
Toggle side area
More details

Entire Site

Customized Training Programs
Blue arrows with 'training' text.
Customized Training Programs
DEISO

Customized Training Programs Empower Your Workforce with Tailored Training Solutions Learn more This training program is exclusively offered on-site or off-site. DEISO Certification Programs Participants may choose to take an optional certification examination. Certification is available for both on-site and off-site training programs. Some of Our Clients Several of our clients have chosen DEISO certified training programs About The Customized Training Programs Training  Service Overview

Read more
1420 1004 DEISO
Specific Environmental Issues in the Oil and Gas Industry Professional Training Program
Offshore oil platform with crane and flare stack.
Specific Environmental Issues in the Oil and Gas Industry Professional Training Program
DEISO

Specific Environmental Issues in the Oil and Gas Industry Professional Training Program Equip your team with the knowledge and skills to address the critical environmental challenges facing the oil and gas industry. Our comprehensive training program provides expert insights into climate change mitigation, water management, biodiversity conservation, waste reduction, and soil and land protection. Learn more DEISO Certification Programs Participants may choose to take an optional certification examination. Certification is available for both on-site and off-site training programs. Some of…

Read more
1420 1004 DEISO
Industrial Waste Management Professional Training Program
Industrial facility with machinery and conveyor belts.
Industrial Waste Management Professional Training Program
DEISO

Industrial Waste Management Professional Training Program Gain expertise in handling hazardous and chemical waste, ensuring compliance and reducing risks. Learn more DEISO Certification Programs Participants may choose to take an optional certification examination. Certification is available for both on-site and off-site training programs. Some of Our Clients Several of our clients have chosen DEISO certified training programs About This Training Program Introduction Effective industrial waste management is crucial for

Read more
1420 1004 DEISO
Climate Change Mitigation Professional Training Program
Factory smokestacks emitting smoke against fiery sunset sky.
Climate Change Mitigation Professional Training Program
DEISO

Climate Change Mitigation Professional Training Program Learn how to reduce greenhouse gas emissions and contribute to a sustainable planet. Learn more DEISO Certification Programs Participants may choose to take an optional certification examination. Certification is available for both on-site and off-site training programs. Some of Our Clients Several of our clients have chosen DEISO certified training programs About This Training Program Introduction Climate change is a pressing global challenge that requires urgent action. Reducing greenhouse gas emissions is essential to…

Read more
1420 1004 DEISO
Environmental Auditing Professional Training Program
Silhouette with eco icons over forest background.
Environmental Auditing Professional Training Program
DEISO

Environmental Auditing Professional Training Program Identify environmental risks, assess performance, and implement effective corrective actions Learn more DEISO Certification Programs Participants may choose to take an optional certification examination. Certification is available for both on-site and off-site training programs. Some of Our Clients Several of our clients have chosen DEISO certified training programs About This Training Program Introduction

Read more
1420 1004 DEISO
Environmental Impact Assessment (EIA) Professional Training Program
Aerial view of farmland with canal.
Environmental Impact Assessment (EIA) Professional Training Program
DEISO

Environmental Impact Assessment (EIA) Professional Training Program Master the art of EIA and ensure your projects are environmentally sustainable and compliant. Learn more DEISO Certification Programs Participants may choose to take an optional certification examination. Certification is available for both on-site and off-site training programs. Some of Our Clients Several of our clients have chosen DEISO certified training programs About This Training Program Introduction

Read more
1420 1004 DEISO
ISO 14001 Implementation Professional Training Program
ISO 9001 illustration with busy street background
ISO 14001 Implementation Professional Training Program
DEISO

ISO 14001 Implementation Professional Training Program Gain the expertise to implement a sustainable environmental management system and enhance your organization's reputation. Learn more DEISO Certification Programs Participants may choose to take an optional certification examination. Certification is available for both on-site and off-site training programs. Some of Our Clients Several of our clients have chosen DEISO certified training programs About This Training Program Introduction ISO 14001 is an internationally recognized standard that provides a framework for organizations to establish, implement,…

Read more
1250 884 DEISO
training types
Man giving presentation to colleagues at computers.
training types
DEISO

Read more
1500 844 DEISO
Newsletter Subscription Policy
Typewriter with 'Terms of Service' paper
Newsletter Subscription Policy
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} Newsletter Subscription Policy By subscribing to our newsletter/mailing list, you agree to receive email communications from DEISO LLC containing news, updates, promotions, and other relevant information. We respect your privacy and will not share your email address with third parties. Your subscription to our newsletter is subject to

Read more
1536 1024 DEISO
Terms of Service
Typewriter with 'Terms of Service' paper
Terms of Service
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} Terms of Service OVERVIEW DEISO LLC operates this website; throughout the site, the terms “we,” “us,” and “our” refer to DEISO LLC., offers this website, including all information, services, and tools available from this site to you, the user, conditioned upon your acceptance of all terms, conditions, policies (“Privacy Policy” and “Refund Policy”) stated in other parts of the website and notices stated here. By visiting…

Read more
1536 1024 DEISO
Close
DEISO Contact & Quotation Inquiry
Start Typing
Close

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

Latest News

Engineering the Future of Sustainable Performance

Explore Solutions
Discover integrated digital and strategic solutions designed to address complex sustainability and environmental challenges.
→
Explore Services
Access DEISO’s full portfolio of sustainability advisory, LCA, ESG, GHG, and independent technical review services.
→
Explore DEISO Training
Browse enterprise-grade training programs in LCA, GHG accounting, EPD, ESG, and advanced sustainability software tools.
→
Request a Quotation
Submit your requirements to receive a structured quotation aligned with your scope, technical needs, and delivery model.
→
Book a Strategic Consultation
Schedule a focused consultation to evaluate your objectives, constraints, and potential pathways before quotation or implementation.
→
Our Clients
Explore the types of organizations DEISO supports across industries, markets, and sustainability maturity levels worldwide.
→
Ask AI
Ask Mirai AI to identify relevant services, solutions, and training options based on your business needs and sustainability challenges.
→
Contact
Reach DEISO to discuss projects, request information, or connect with the right team for your technical or commercial inquiry.
→
Live Chat
Start a real-time conversation for quick guidance on DEISO services, training, solutions, or general support needs.
→
WhatsApp Chat
Contact DEISO via WhatsApp for convenient communication, fast follow-up, and direct engagement with our team.
→
Service Finder
Quickly identify the most suitable DEISO service aligned with your organization’s objectives, technical needs, and project scope.
→
Training Finder
Find the ideal training path tailored to your team’s expertise level, tools, industry context, and learning priorities.
→
Advanced Search
Search DEISO’s website more precisely to locate services, sectors, training programs, support pages, and technical resources.
→
Support
Access DEISO support resources, guidance pages, and assistance channels for navigation, platform use, and common inquiries.
→
Subscribe to Mailing List
Join DEISO’s mailing list to receive updates on services, insights, training opportunities, and new sustainability resources.
→
Login
Sign in to access available DEISO digital areas, client tools, or account-based resources and platform functions.
→
Toggle Dark Mode