Legal analysis: 1. Supporting engineering facilities: power supply system, water supply system, weak current system, heating system, gas system, security system, parking management system, elevator system and building lightning protection system.

2. Supporting residential facilities: gardens, green spaces, fitness venues outside the aisle, equipment-based sketches, fountains, pavilions, parking lots, indoor sports (fitness) swimming pools, etc. * * * lighting, park lights and corridor lights.

legal basis: article 285 of the civil code of the people's Republic of China, the realty service enterprise or other managers shall, upon the entrustment of the owners, manage the buildings and their ancillary facilities within the building division in accordance with the provisions on realty service contracts in Part III of this Law, accept the supervision of the owners, and promptly answer the owners' inquiries about the realty service.

the realty service enterprise or other managers shall implement the emergency measures and other management measures implemented by the government according to law, and actively cooperate with relevant work.