When did the elevator stop using polyurethane buffer?

I've been using it. Official website of China Administration for Industry and Commerce inquired that the polyurethane buffer for elevator was successfully developed on 1993, which belongs to environmental protection equipment and was still in use as of June, 2023 12. Elevator refers to the permanent transportation equipment serving several specific floors in a building, and its car runs on at least two rigid tracks perpendicular to the horizontal plane or with an inclination angle less than15.