KOREA ZINC

Environmental Management System

The Onsan Refinery, first acquired ISO 14001 certification in 2015. This certification, which serves as the international standard for environmental management systems, has been maintained through regular renewals. The refinery undergoes annual audits by accredited third-party institutions to assess and improve its environmental management system, ensuring its continued effectiveness.

Investment in Energy Conservation & Saving from energy Conservation programs

Korea Zinc has consistently made energy-saving investments each year. In 2025, it invested approximately KRW 14.6 billion in energy-saving activities.

Promotion on mental health awareness

The company conducts an annual mental health assessment for all employees, including contractors working at operational sites. In 2024, the assessment took place from May 8th to June 28th, evaluating 43 key factors. These factors encompassed the physical work environment, interpersonal conflicts, corporate culture, work-related stress, and the level of autonomy employees have in their roles. Participants identified as experiencing high stress levels were provided with one-on-one counseling sessions, along with the option for more in-depth support if required. Additionally, employees who displayed healthy mental well-being received online educational materials to help sustain and enhance their mental resilience. Furthermore, the company provides all employees with access to free consultation programs each year to support both job satisfaction and emotional well-being.

Product Safety

Korea Zinc produces a diverse portfolio of metals, ranging from base metals to precious and minor metals. The company utilizes a variety of metallurgical processes to extract target metals from different raw materials and efficiently remove impurities, resulting in high-purity products.
The company’s products are registered with the London Metal Exchange (LME) and the London Bullion Market Association (LBMA), demonstrating alignment with internationally recognized quality standards.

Human Resource Management

Korea Zinc enhances its competitiveness by strengthening employees’ leadership and job-related competencies and providing language training. We also regularly assess employees’ training needs and conduct satisfaction surveys and training evaluations to support their career development and enhance their performance.
In addition, to create an efficient working environment and support work-life balance, Korea Zinc has enhanced its working hours and attendance management system and implemented a PC-OFF system. Through these initiatives, the Company aims to systematically manage working hours and foster a healthy work culture for its employees.

Supply Chain ESG Assessment

Korea Zinc conducts annual ESG assessments of selected key suppliers, reflecting its Supplier Code of Conduct as well as relevant domestic and international requirements, and covering environmental protection and other related ESG topics.
These assessments are designed to systematically and comprehensively review whether suppliers meet the Company’s standards and expectations. In 2025, ESG assessments were conducted for key suppliers, and among the assessed suppliers, 10 were selected for additional on-site ESG assessments to more thoroughly review their compliance across ESG topics. As a result of the on-site ESG assessments, no material environmental impacts were identified (0 cases).
In addition, to support the enhancement of ESG capabilities among the assessed suppliers, Korea Zinc prepares and provides company-specific diagnostic reports analyzing each supplier’s ESG performance level.