Warning signs such as safety instructions for landing key holes, "no dependence" or "door blocking danger" must be set outside the elevator landing door; Effective safety measures, use signs and emergency telephone numbers shall be posted in prominent positions at the entrances and exits of elevator cars and escalators.

In order to improve the public's awareness of elevator safety and ensure the safe use of elevators, Shenyang Quality Supervision Bureau issued the Notice on Further Strengthening the Publicity and Management of Elevator Safety Precautions and Warning Signs, which put forward normative requirements for warning signs of elevators in use.

For elevators in use, the quality supervision department requires that warning signs such as safety tips for landing key holes, "no dependence" and "danger of blocking doors" be set outside the elevator landing doors; Effective safety measures, use signs and emergency telephone numbers shall be posted in prominent positions at the entrances and exits of elevator cars and escalators.