of the elevator fire door yog ib hom of elevator door system. Thaum hluav taws tshwm sim hauv pem teb, nws tuaj yeem tiv thaiv kev sib kis ntawm hluav taws thiab cov pa taws los ntawm kev sib kis, ua kom muaj kev ncaj ncees thiab thermal rwb thaiv tsev ua haujlwm ntawm lub elevator nrog lub qhov rooj kaw lus, thiab tiv thaiv tus kheej kev nyab xeeb. . Qhov sib xyaw ntawm lub elevator hluav taws qhov rooj muaj xws li: hluav taws qhov rooj ntaus ntawv, hluav taws qhov rooj vaj huam sib luag, hluav taws qhov rooj npog, hluav taws sill, thiab lwm yam.