The document summarizes the regulations and process around requests for information (RFIs) during investigations in Taiwan. It discusses the obligations of concerned parties and third parties to provide information, with concerned parties having a higher obligation. It provides examples of how the Fair Trade Commission (FTC) has used RFIs to assess market dominance in cases involving potential anti-competitive behavior. Through RFIs, the FTC aims to understand market definition, transactions, industry structure and consumer preferences to determine if laws have been violated.