Documents for download 

Technology 

Information security management 
ISO 27001

Environment 

Environmental management 
ISO 14001 
Environmental Energy Management Policy 
ISO 50001 
Energy management
Annual Energy Efficiency Report 2020
Annual Energy Efficiency Report 2021 
Annual Energy Efficiency Report 2022 
Annual Energy Efficiency Report 2023 

Transparency 

Governance and ethics
Supplier Code of Conduct 
General Procurement Conditions 
Code of Ethics  
Data protection
Data privacy information related to recording of telephone conversations  
Data protection information of CETIN