Instruction: This questionnaire is designed for international customers of Xinjiang Blue Ridge Tunhe Polyester Co., Ltd. It covers four dimensions: Product Quality, Delivery, Service, and Complaint Handling. A five-point Likert scale is applied (1=Strongly Dissatisfied, 5=Strongly Satisfied). Please evaluate based on your actual experience. The results will be used for academic research and company improvement only, and all information will be kept confidential.