Brand Identity: The domain name should be closely related to your brand and business focus. In this case, it could include keywords like "public facility," "IoT security," or "protection assessment."

Memorability: Since you're targeting mobile users, the domain name needs to be easy to remember and type. Avoid complex or lengthy names.

Uniqueness: To stand out from competitors, choose a domain name that is unique and not easily confused with other similar brands or services.

SEO Benefits: Consider the potential SEO benefits when choosing a domain name. Keywords relevant to your business can help improve search engine rankings.

Regarding the applications of English mobile domain name (mobi) in different industries:

Electronic Sports (Esports): Esports companies can use mobi domains to create mobile-optimized websites for live streaming games, providing tournament schedules, and selling merchandise.

Online Medical Consultation: For online medical consultation platforms, a mobi domain can be used to provide users with easy access to healthcare information, appointment booking, and telemedicine services.

Film Post-production: A mobi domain can be beneficial for film post-production houses to showcase their portfolio, provide online tutorials, or even offer services directly through their mobile website.