第十三条洁净室(区)内各种管道、灯具、风口以及其他公用设施，在设计和安装时应考虑使用中避免出现不易清洁的部位。

Article 13: the various pipes, light fixtures, ventilation points and other public facilities in the clean room (area) shall be designed and installed so as to avoid areas being difficult to clean.

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第三条住宅区的公共场所和公用设施，由全体业主、承租人和其他非业主使用人共同使用与维护。

Article 3 the public places and public utilities and equipment within the residential quarters shall be used and maintained jointly by all the proprietors, leaseholders and other non-proprietor users.

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