Pre sales professional consulting service

        A. 7 * 24-hour pre-sales service hotline

        B. 7 * 24-hour online customer service

        C. Expert solutions, provide professional design solutions

        After sales service commitment

        A. 7 * 24-hour after sales service hotline

        B. Quick response to customer feedback

        C. Provide on-site guidance and technical training services

        Regular customer satisfaction survey

        A. Delivery satisfaction

        B. Installation satisfaction

        C. Use satisfaction

        D. After sales service satisfaction