1. Product quality assurance: We will strictly control the quality of yarns and fabrics sold to ensure that products meet relevant standards and regulations. If quality problems are found in the products, we will provide certain compensation.

2. Technical guidance and support: We will provide customers with technical guidance and support on products. If customers encounter difficulties in the use process or have problems to solve, we will answer customers' questions and provide relevant technical support.

3. Question consultation and answer: We will carefully listen to customer feedback and complaints, and deal with them in a timely manner, and effectively communicate with customers. For the questions and suggestions raised by customers, we will actively improve our products and services to improve customer satisfaction and enhance reputation.

Product after-sales service aims to solve problems and provide satisfactory solutions for customers through product quality assurance, technical guidance and support as well as customer feedback and complaint handling, so as to ensure that customers get comprehensive support and help in the process of using products.