nws cov khoom muag barcode yog hais txog qhov khoom siv los siv rau cov khoom muag. Tshwj xeeb, tus kws qhia ntawv siv txoj cai ntawm ob qho tib si rau kev paub txog cov khoom siv thoob ntiaj teb. Ntxiv nrog rau cov rooj plaub hauv qab no, yuav siv tau cov khoom Barcode EAN-13.
Qhov chaw luam tawm ntawm EAN-13 khoom barcode ntau tshaj li ib quarter ntawm qhov chaw siab tshaj plaws ntawm cov ntawv luam tawm los yog ib yim ntawm tag nrho cov chaw luam tawm.
2. Thaum qhov chaw siab tshaj plaws ntawm cov ntawv luam tawm yog <40cm2 lossis="" tag="" nrho="" qhov="" chaw="" luam="" tawm="" yog=""><>
3. Thaum qhov khoom ntawd nws yog ib tug kheej kheej nrog ib lub cheeb ntawm <3>
