Case Kev daws teeb meem

Cov txheej txheem tsim cov ntaub ntawv yog ib feem tseem ceeb thaum tsim cov phau ntawv hardcover.Npog cov laug cam thiab txha nraub qaum yog muab tso rau ntawm daim ntawv npog cov ntaub ntawv thiab tom qab ntawd cov npoo sib tshooj ntawm cov khoom siv npog yog tig rau hauv.

Peb muaj peev xwm sib txawv rau cov txheej txheem ua rooj plaub: los ntawm phau ntawv mus rau barcode-tswj semi-automatic ntau lawm.Lub hom phiaj yog ib txwm nyob rau ntawm qhov xav tau ntau lawm thiab lub sijhawm teeb tsa tsawg kawg nkaus rau kev hloov cov qauv.

Kev daws 1