TSC has established multiple communication channels such as the customer service line (0800-026-168), the website customer service mailbox (tsc01@taisugar.com.tw), and the FB TSC Fanpage and assign designated personnel to handle and respond to public and consumer opinions (including inquiries, suggestions, and complaints). The Company has issued the “Customer Compliant Handling Guidelines” in accordance with the Executive Yuan’s Consumer Protection Act. In addition, we also implement the duty of confidentiality of customer information and provide a transparent and effective consumer complaint procedure to handle consumers’ or customers’ complaints fairly and immediately. In addition, through the Customer Opinion Management System, the competent business units are immediately informed of the opinions and a response is required to be given within 3 days. The principle is to handle complaints fast, professionally, and satisfactorily. In 2025, a total of 4,323 inquiries and opinions were received, and all of them were handled properly. In 2025, there were no major consumer disputes at TSC.

To continuously improve our products and services, the Company conducts a Customer Satisfaction Survey annually. In addition to compiling the survey results and holding review meetings, the analysis reports and meeting minutes are also submitted to relevant departments for reference and appropriate action. 2025 The Ministry of Economic Affairs' State - Owned Enterprises Affairs outsourced TSC's customer satisfaction survey, and the score for customer satisfaction survey in 2025 was 97.35 points, an increase of 0.04 points compared with 2024 (97.31 points).