Every day, there is a problem concerning the use of elevator key card is used to press the floor does not. That this problem has occurred for a long time. Fix the system, but it comes back with the same problem: 1. lift the body 1. Press up 4 floors do not. 2. lift the body 3 Single layer pressed up no. 10 floors 3. lift the 4. 6 layer press does not. Customer complain every day, please consider urgently with it.
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