Farm sewage treatment is one of the necessary processes in each farm. Animals in the breeding factory remove feces, wash out house sewage, and pen disinfection liquid are the main sources of farm sewa
2020-07-13In recent years, my country's paper industry has developed rapidly. In 1995, the output of machine-made paper and paperboard in the country was 2400x104t, ranking third in the world (first in the Uni
2020-06-09Phone
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