Txhawm rau txo cov ntawv pov tseg, ntau lub khw muag khoom loj pib qhia UV laser npav tshuab los kos cov ntaub ntawv ntawm cov txiv hmab txiv ntoo. Piv nrog rau kev siv daim ntawv nplaum, qhov kev txav no tuaj yeem txo los ntawm 10 tons ntawm daim ntawv thiab 5 tons ntawm cov nplaum.