Bolong after-sales department as a link between the company and customers, with a professional after-sales service team, heart-oriented, treat each other honestly. Committed to providing customers with worry-free, fast, efficient and diversified professional services. To customer satisfaction for the purpose, rapid response, accurate service. And pay attention to the construction and training of after-sales team, regularly organize after-sales engineers for training and assessment, constantly improve and enrich the skills of after-sales engineers, and provide customers with better and more professional services.