1. Cov pob zeb pob zeb los ntawm qhov sib txawv qhov qhib los yog sib txawv thiab cov lus qhia;
2. Tsis muaj typeetting tom qab zeb txiav ua, los yog tsis muaj sequential numbering raws li cheeb tsam tom qab typesetting;
3. Tsis ua raws li daim ntawv code thiab batch naj npawb muab los ntawm tus neeg muag khoom;
4. Nyob rau hauv cov txheej txheem ntawm kev ntub dej, cov khoom siv sib txuas yog siv los kov cov pob zeb nto, thiab xim txawv ntawm pob zeb yog tshwm sim tom qab cov tshuaj tiv thaiv nrog lub pob zeb;
5. Tom qab ib lub sij hawm ntawm kev siv cov pob zeb ntuj, cov xim maj mam txiav tshuabpib ploj mus, thiab thawj lub pob zeb ci ntsa iab pib ua grey thiab tsaus.
5.1. Cov tshuaj lom neeg muaj pes tsawg leeg ntawm pob zeb tau hloov pauv, piv txwv li, qee cov xim xim hauv pob zeb muaj oxidation multi hniav txiav tshuab.cov tshuaj tiv thaiv nrog huab cua, uas ua rau lub suab xim hloov;
5.2. Qee cov zaub mov hauv pob zeb poob dej siv lead ua, uas txo cov xim saturation ntawm pob zeb;
5.3. Acid quarry pob zeb thaiv txiav tshuabroj los yog kua qaub los nag nyob rau hauv granite block cutterhuab cua hloov lub suab thiab brightness ntawm lub pob zeb;
5.4. Paving qhov chaw: Pob zeb yog ntau choj txiav tshuab graniteNws yog feem ntau yellowing nyob rau hauv cov chaw uas muaj zog ultraviolet hluav taws xob.
