Professional maintenance staff shall report and submit one Present Operation report of Elevator every three months to the owner.
专业维保人员每三个月向业主方汇报并提交一份《电梯目前运行情况报告》。
Inspection and maintenance shall be conducted once every five days to control the performance of elevator operation.
天为一个周期的巡回检查和维护，控制电梯运行质量。
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