例句 /

Today, we mainly engage in the study of the bioremediation technology of black-odors river and eutrophic lake and the equipment in water treatment and air purification field.

Today, we mainly engage in the study of the bioremediation technology of black-odors river and eutrophic lake and the equipment in water treatment and air purification field.

公司现主要从事城市黑臭河道和富营养湖泊治理技术研究以及水处理产品和空气净化产品研发。