1. Qhov ob-xim ob-daim ntawv offset tshuab luam ntawv muaj qhov hloov kho tau zoo thiab tsis muaj qhov tseev kom muaj rau ntau daim ntawv;
2. Tus number case ntim hloov kho qhov nrawm yuav tsum nrawm nrawm, txwv tsis pub lub sijhawm ua haujlwm yuav raug ncua, thiab ob-xim ob-xim ob tog offset tshuab luam ntawv yuav tsum muaj lub cim xeeb muaj nuj nqi;
3. Qhov ob-xim ob-txoj kab xa tawm cov xovxwm tawm yog yooj yim los tswj, thiab cov haujlwm khawm yuav tsum rhiab;
4, tuaj yeem ua tiav txoj haujlwm ntawm kev tshawb nrhiav qhov txhaum, ob-xim ob-tog ob zaug offset printing presses yuav tsum tam sim ntawd thaum ua tsis tiav.
