Ⅰ. General principle Our company takes the management concept of “keep the technology ahead, top quality, customer paramount, based on credit”, pursues the prefect after service, takes improving the customer's satisfactory as the guidelines, builds the after service management system with the feature. Ⅱ. Management system 1. our company builds expert after service department, and builds the expert post for after service to accept and hear the customers' complain, information management, supervision of interior processing flow. Maintaining the products or management of maintaining, 2. our company's after service department takes change of collecting, counting and reporting to the leadership, accept and hear the customers' complain, supervision of the customers' interior processing flow management. 3. our company will hold various products after service trainings periodically or aperiodically. 4. our company has set the countrywide after service consultation hotline, the number is 010-64882405, and has set the company's after service mail box, the E-mail is service@maen.com.cn ; and will set the on