escalator of public-traffic type, for indoor and outdoor, safe, transport large amount ... passengers and long-time working Escalator of public-traffic type:For indoor and outdoor, optional functions.This one escalator ... -15m (35degree, only for lower than 6m )Gradient: 30 / 35 degreeStep width: 600 / 800 / 1000 mmHorizontal steps: 2 / ... Escalator Safety Parts: Function: Escalator of public traffic type