According to the provisions of the relevant state departments on product after-sales service, the company solemnly makes the following commitments to customers: 1. One year is the product quality guarantee period from the date of shipment. According to the product standards and product performance requirements (non-man-made damage), the company will implement three guarantee repairs for free if any failure occurs. 2. Outside the warranty period, the company's service staff will visit customers regularly, consult free of charge, and provide consumable parts according to customer needs. 3. After receiving feedback from customers, our company immediately dispatched service personnel to arrive at the service site within 24 hours in Hebei region and other regions (domestic within China) to reach the service site within 72 hours to solve the problems in time. 4. All employees of the company will provide customers with high-quality and satisfactory services based on the quality goal of "100% service quality satisfaction rate".