After-sale services: 1. After the delivery of our products,our company can send the specially-assigned person to the goods receiving site of the client to check goods delivered. 2. Provide free on-site debugging and installation guidance services for the products sold. 3. Our company has the afer-sale team based on high-quality and high-level technical personnel,and will give clients the satisfactory reply and professional handling plan in written form within minimum 48 hours after receiving the service demand information or feedback of clients. 4. Our company responds to the call of national quality system,so we provide the "Three Guarantees"service for the products produced by our company(if the problems are truly caused by product quality of our company,we will be responsible for refund,replacement and repair after verification of the technical personnel in our company. 5. Our company regularly visits users and market research to further learn about the use conditiona of my company's product,and to help users with problems on a variety of technical convergence probably encountering in the process of use,At the same time,our company will continuously improve the design program on product quality and technology through visits to users and a large number of data research in order to provide better services for users.