国产女人高潮叫声|翔田千里sprd1088在线观看|18may19-XXXXXL|少女たちよ在线观看免费版动漫|周老爹和张晓晗|肉体奉公HD中文字幕|经营渡假旅馆3版

010-8205 5667 CN
Handan new rural reconstruction project
2020.09.18 Solution 3100

In the new rural transformation of Yongnian County, Handan, the negative pressure conveyance and resource utilization system of black ash moisture is adopted to separate the high-load feces and urine from the source for collection and treatment. The concept is changed and the treatment process is simplified, which not only recycles the resources, but also solves the problems of difficult mixed sewage treatment and supervision.

Back to list