The question can be answered in this document: https://esg.asus.com/english/file/ASUS_Supplier_Code_of_Conduct.pdf
However, it is not clearly seen how the Company takes action to provide grievance mechanism/remediation.
p.2
"For suppliers identified as high risk, ASUS conducts on-site audits executed by third-party organizations and/or by ASUS auditors. These audits seek to ensure enforcement of the ASUS Supply Chain Code of Conduct. If necessary, auditors help develop plans to help suppliers meet all requirements to be in full compliance. All audit results are publicized in quarterly business review reports in order to provide management units with information that may affect procurement strategy."