The article introduces principle of design and construction of HDPE film floating cover for sewagesink, construction of the cover, material selection as well as key points of its installation.
介绍了采用HDPE膜做污水池浮动盖的设计和施工原则，浮动盖的构成、材料选用和施工安装要点等。
2
Plug bathtub and sink drains to prevent sewage backup.
塞好浴缸与水槽的下水口，以免污水倒流。
3
Check to see that water and sewage lines are intact before using the toilet. Plug bathtub and sink drains to prevent sewage backup.