Raws li cov cuab yeej lag luam, cov ntawv tso rau sawv daws tau tsim nrog kev txhim kho ntawm POP kev tshaj tawm. Nws muaj qhov zoo ntawm kev tiv thaiv ib puag ncig, kev thauj mus los yooj yim, thiab kev sib dhos sai. Thaum muab tso rau hauv qhov chaw muag khoom, nws tuaj yeem ua lub luag haujlwm hauv kev nthuav tawm cov khoom lag luam, xa cov ntaub ntawv, thiab txhawb kev muag khoom.
Kev siv cov ntawv tso saib racks yeej hauv Tebchaws Europe thiab Tebchaws Meskas thaum ntxov. Cov ntawv luam tawm tau zoo tshaj plaws tau dhau los ua neeg txawv teb chaws thiab tau siv dav hauv zaub mov, tshuaj txhua hnub, khoom siv hauv tsev, cawv txiv hmab thiab lwm yam lag luam. Ntau lub tuam txhab ntim khoom hauv Tebchaws Europe thiab Tebchaws Asmeskas tseem ntseeg tias kev tsim cov ntawv tso rau hauv racks tuaj yeem txhim kho cov txheej txheem ntawm tuam txhab thiab kev muaj peev xwm muag ntawm lub tuam txhab. Hauv Tebchaws Europe thiab Tebchaws Meskas, cov ntawv sawv ntsug yog cov khoom lag luam muaj txiaj ntsig zoo heev, thiab tau siv los ntawm ntau cov neeg siv thiab cov chaw tsim khoom.
Kev siv cov ntawv racks hauv Suav teb: Thawj daim ntawv tso saib racks tau ua nyob hauv thaj av loj txog xyoo 2000. Lub sijhawm ntawd, tsuas muaj peb lub chaw tsim khoom lag luam ntawv hauv Guangdong, qhov uas ntim tau ntau dua. Xyoo tsis ntev los no, nws tau tsim kho sai, feem ntau hauv Guangdong/Shanghai/Beijing thiab lwm qhov chaw; qhov kev thov yog tseem ua dav thiab dav dua.
