恋丝袜视频-恋夜欧美视频一区二区-恋足者必看[32p]-良妇出轨视频在线观看-另类sm按摩-另类vivox21老少配

Scientific and environmental storage of livestock manure is conducive to the protection and improvement of the agricultural environment. The establishment of an environmentally friendly manure storage tank for the safe storage of manure materials can reduce agricultural environmental pollution. Adding stirring device can shorten the time of natural fermentation.

①Steel plate and glass steel structure of the manure tank

② precast concrete structure of the manure tank

③ impermeable cloth structure of the manure tank

④ the reservoir of cast-in-place concrete structure

⑤ mobile mixing device

⑥external fixed stirring device