JouxSou tipidagi stp
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Maishiy oqovatlarni tozalash dasturi
Ko'proq o'qish -
Tongni milliy botqoqlik parkida kanalizatsiyalash
Tongli National Wetland Park Domestic Sewage Treatment Project Wetland parks are an important part of the national wetland protection system, and are also a popular choice for many people's leisure travel. Ko'pgina botqoqli parklar sahna maydonida joylashgan ...Ko'proq o'qish