Recently, frequent extreme weather events and security risk incidents across various regions have driven a continuous rise in safety demands for personal and property protection among mid-to-high-end users, ushering in new development opportunities for the customized underground bunker market. Industry research reveals that the proportion of mid-to-high-end users consulting about and booking underground bunkers has increased by 35% year-on-year. These users, mostly business owners and high-net-worth individuals, place emphasis on the safety, comfort, and multi-functionality of bunkers. Mainstream products on the market have transcended the traditional  refuge space  positioning, integrating configurations such as constant temperature systems, emergency power supply, air purification, and material storage areas. Some high-end models even feature additional remote monitoring and communication support modules, with the customized price of a single unit ranging from several hundred thousand yuan to several million yuan. Clients not only focus on structural impact resistance, waterproof, and fireproof performance but also expect bunkers to serve dual purposes as temporary offices and family residences,  noted a person in charge of a bunker R&D enterprise. Currently, orders have been scheduled until the first quarter of next year, and the enterprise has also adopted modular design to shorten the construction cycle, catering to users needs for rapid deployment. Industry insiders analyze that with the popularization of safety awareness, mid-to-high-end underground bunkers may transform from a "niche demand" to a diversified safety solution.