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every day i take the elevator and look at the familiar but unnamed colleagues in the elevator. i only get a brief impression on the occasion of passing the time. there is also a slight impression that i can take care of their actions every......

with the implementation of the special equipment safety law on january 1, 2015, the elevator industry has ushered in a crucial moment, and in 2014 it will make new changes to the standards of elevators. therefore, in 2015, the elevator indu......