Abstract: A step of a passenger conveyor and a passenger conveyor. The step is provided with a step anti-jump member which includes: a first portion connected to a frame of the step, and a second portion connected to the first portion and extending towards a step guide rail, after a plurality of steps are connected by a step chain and assembled in place on the step guide rail, preset gaps are maintained between the second portion and the step guide rail, and when an upward jump displacement of the step exceeds a preset value during a travelling of the step along the step guide rail, the second portion comes into contact with the step guide rail to limit the step from continuing to jump upward.

Abstract: This invention relates to a white electroluminescent polymeric material and preparation thereof. Based on the physical idea that white light emission can be achieved by regulating the relative luminous intensities of blue- and orange-light emitting units located in a single polymer molecule, the present invention provides three types (main chain type, pendant chain type, and terminal group type) of high efficiency and stable white electroluminescent polymeric material systems.