"Supplier performance evaluations Supplier performances are systematically monitored at OYAK Mining Metallurgy Group. In addition to sustainability, suppliers are evaluated in accordance with supplier evaluation criteria, and are classified based on their scores. The purchasing units assess companies which have provided the items included in the List of Materials, Equipment and Services That Directly Affect the Quality in the previous year. The supplier class and the degree of risk are determined according to the result of this assessment. Supplier classes are divided into 4 categories: A, B, C, D. • The Group does not work with class D suppliers, • Improvement plans are prepared for class C suppliers, • Verbal-written warnings are given to Class B suppliers, stipulating measures they are required to take, • The Group continues to work with Class A suppliers without taking any action." p. 50