男人吃奶摸下挵进去好爽在线观,久久久无码精品国产一区,国产成人无码午夜视频在线播放,日韩插啊免费视频在线观看

NEWS INDEX-NEWS

Advantages and disadvantages of buried integrated sewage treatment equipment


1.JPG


Advantage

There are many kinds of buried sewage treatment processes. The most prominent advantages are:

1. the equipment is buried under the surface, which can be greening and beautiful.

2. generally, the whole equipment does not need special person management.

3., it can reduce the floor area, build parking lots above the equipment, and do not need to build factories and other facilities.

shortcoming

1. is not conducive to maintenance. After the equipment fails, it is not convenient to repair and replace. This is usually the biggest worry for the owners.

2., strong adaptability to environment, winter freezing and flood control in summer.