The whistleblowing mechanism is mention in the Anual Report 2018, but does not explicitly mention suppliers and is not mention in minerals couments or policies. P. 107 "WHISTLEBLOWING SYSTEM. Whistleblowing System is a system that manages complaints or disclosures concering unlawful and/or unethical conducts by optimizing the roles of management, employees, and business partners in disclosing any violation within the Company’s environment.The Company realizes the importance of a Whistleblowing System in identifying fraud, misappropriation and other actions that disadvantage and inhibit the Company’s business. Under this system, the Company receives, reviews and handles the reports submitted by the employees, stakeholders, and the public by maintaining the informant’s confidentiality.In 2018, there was no complaint recorded."