Core Insights - The article emphasizes the importance of professional installation and ongoing service support for breakthrough technologies, particularly in the context of Haier's new 4Hz ultra-low frequency central air conditioning system [1] - Haier has established a comprehensive service guarantee system to ensure a seamless user experience from product launch to installation and maintenance [1] Group 1: Service Network - Haier's service network covers 336 cities and 2840 districts across the country, with over 3500 service points established to provide professional support to users in both urban and rural areas [3] - The foundation of this network consists of more than 20,000 trained and certified service engineers who possess comprehensive skills in central air conditioning system principles, precise matching of indoor and outdoor units, complex piping design, and intelligent debugging [3] Group 2: Installation Standards - Haier has standardized its service process into a "7-Star Precision Quality" system, which includes 41 major steps and 295 specific standards covering design, materials, craftsmanship, and supervision [4] - This standardization ensures that every hidden installation process, from measurement and design to pipeline welding and refrigerant filling, follows clear technical specifications and inspection points [4] Group 3: Continuous Training and Lifecycle Service - Haier has set up 2 comprehensive practical training bases and 16 training centers nationwide, completing over 30,000 professional skill training and certification sessions annually [5] - The service capability is designed to be continuously available, with a lifecycle service guarantee system that includes specialized materials and proactive maintenance options [6] - The company aims to elevate service value from mere post-installation response to proactive professional delivery and ongoing experience assurance, indicating a shift in competitive focus within the central air conditioning industry [6]