Dai Dan : Received an "A" rating in CDP Supplier Engagement.

Selected as a "Supplier Engagement Leader," the highest rating in CDP's "Supplier Engagement Assessment."

May 25, 2026

Dear everyone

Dai-Dan Co., Ltd.

Selected as a "Supplier Engagement Leader," the highest rating in CDP's "Supplier Engagement Assessment."

Daidan Corporation (Head Office: Nishi-ku, Osaka; President & CEO: Yasuhiro Yamanaka) has been awarded the highest possible rating of "A" in the 2025 "Supplier Engagement Assessment" by CDP ^* , an international environmental non-profit organization, and has been selected as a "Supplier Engagement Leader" for the first time.

*CDP is a non-profit organization headquartered in London, UK, that requests companies to disclose information on their response to climate change, including their governance structure, risk and opportunity assessments, strategic responses, and greenhouse gas emissions.

The "Supplier Engagement Evaluation" is scored from five perspectives: "Governance," "Goal Setting," "Understanding and Managing Scope 3 Emissions," "Risk Management Process," and "Engagement with Suppliers." Companies that meet certain criteria are selected as "Supplier Engagement Leaders," receiving the highest rating.

Going forward, we will continue to promote initiatives related to "contributing to carbon neutrality," one of our material issues, thereby contributing to the realization of a sustainable society and enhancing corporate value. We will continue to advance our efforts to address our material issues through our business activities, thereby contributing to the realization of a sustainable society and promoting the enhancement of corporate value.

• 2025 Supplier Engagement Evaluation:

Supplier Engagement Assessment - ​​CDP

that's all

[Contact Information]
Daidan Corporation, President's Office, Corporate Communications Department, Yuri Nagata, 2-15-10 Fujimi, Chiyoda-ku, Tokyo 102-8175, Japan
Tel: 03-3261-4568
Email: [email protected]