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》。
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》。
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