1. Basic requirements; 2. Conditions of use; 3. Overall machine performance; 4. Components: drive host, speed limiter, safety gear, buffer, car upward overspeed protection device, car accidental movement protection device, car, Car roof, car floor, landing doors and car doors, suspension devices, counterweights, guide rails, control cabinets and other electrical equipment, energy consumption, basic requirements for barrier-free design, and operation assessment before delivery; 5. Reliability.