Anti- Cov hnab lim plua plav zoo li qub yog tsim rau kev ua haujlwm ib puag ncig uas muaj cov nplaim hluav taws kub hnyiab thiab cov plua plav tawg - xws li hmoov av hmoov av, tshuaj lom neeg hmoov av, thiab hmoov av hmoov av.
Lawv daim ntawv thov muaj xws li cov khoom sib cais- cov khoom siv roj sib cais thoob plaws ntau yam kev lag luam, suav nrog tshuaj lom neeg, metallurgy, kev ua zaub mov, thiab tshuaj.
Tsis tas li ntawd, cov khoom no tau siv dav hauv cov khoom siv sib cais- cov khoom siv roj sib cais nyob rau hauv ntau qhov chaw ntawm kev lag luam, suav nrog cov chaw tsim hluav taws xob, steelworks, metallurgy, tooj liab thiab aluminium ntau lawm, cement manufacturing, chemical processing, mining furnaces, carbon black thiab asphalt mixing, heating systems, waste incineration, pharmaceuticals, glass and relations.
