Lub teb chaws tus qauv rau cov ntawv pov tseg ntawv

Tus qauv hauv tebchaws rau cov pob ntawv pov tseg tsuas yog suav nrog GB 4806. {} "Cov ntaub ntawv hauv tebchaws GB / T} thiab GB /}" ntawv khob ". Cov qauv no nruj cov ntaub ntawv, kev nyab xeeb ua tau zoo, thiab cov kev siv tau huv ntawm cov ntawv ntim, ua kom muaj kev nyab xeeb thiab kev nyab xeeb ntawm cov khob ntim.