Yamaguchi Operations' Policy

In accordance with Taiyo Oil’s company credo and corporate philosophy for business establishments, Yamaguchi Operations shall work hard at safe, stable, worry-free operations based on putting safety first, respecting human life, and being thorough in compliance, with the aim of achieving accident-free and disaster-free operations, preserving the global environment, and providing products and services that meet the requirements of customers so as to contribute to the achievement of the Sustainable Development Goals (SDGs) while realizing and sustaining coexistence and shared prosperity with society and stakeholders.

We at Yamaguchi Operations shall develop and demonstrate strong worksite capabilities, and carry out the following items in an agile and sincere manner as a dignified business establishment.

  1. We will work hard to strengthen our foundation from all perspectives of security control, occupational safety and health, environmental management, and quality control to achieve safe, stable, and worry-free operations. In particular, for security control, we will work to build our safety foundation, nurture a safety culture, and reinforce our security capabilities.

  2. We will comply with in-house regulations and with the requirements that the Operations have consented to, founded on thorough compliance with laws and regulations.

  3. We will work to develop personnel based on the Operations’ vision for personnel, actively identify and assess potential risks in terms of processes, facilities, occupational safety and health, and apply the ingenuity and creativity of all personnel to reducing such risks.

  4. We will stably supply high-quality products that meet our customers'needs.

  5. We will keep in mind to prevent air and water pollution, noise, and odors as well as saving resources and energy, and at the same time, improve or maintain and manage our environmental impact.

  6. We will contribute to the achievement of the SDGs through working on key environmental, social, and governance (ESG) issues.

  7. We will actively grasp stakeholders' needs, confer and communicate with them, and maintain transparency in our operations.

  8. We will set goals for the purpose of achieving this Policy and, in the course of firmly carrying it out, regularly revise it in order to ensure ongoing and sustained improvements.

  9. We will have all employed at these Operations fully familiarize themselves with this Policy.

Make Yamaguchi Operations Great Again!

October 1, 2025

Nobutaka Sumikawa

General Manager, Yamaguchi Operations
Taiyo Oil Co., Ltd.