1. Rau cylindrical fwj, tshwj xeeb yog cov uas cov taub ntawm tsawg dua 30mm, xaiv cov khoom kom zoo.
2. Yog tias daim ntawv lo loj loj dhau lossis tsawg dhau, saib xyuas yuav tsum tau them rau qhov ntsuas tiag tiag.
3. Yog tias cov khoom uas txuas nrog yog ib qho chaw tsis xwm yeem lossis txawm tias ib qho kev txiav txim siab tshwj xeeb rau cov hom ntawv lo, tuab thiab nplaum.
4. Qee qhov chaw ntxhib xws li corrugated thawv yuav cuam tshuam rau cov paib, thiab cov kua roj vanish nyob rau saum npoo ntawm lub thawv corrugated tseem yuav muaj kev cuam tshuam.
5. Tsis siv neeg daim ntawv lo tshuab daim ntawv lo, yog tias tsim nyog, daim ntawv lo tes yuav nqa tawm.
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7. Cov yam ntxwv ntawm cov nplaum yuav cuam tshuam los ntawm ib puag ncig nrog ntau cov dej lossis roj ntau dua. Saib xyuas yuav tsum tau them rau ib puag ncig thiab qhov kub thiab txias.
8. Lub saum npoo ntawm cov muag muag rau nyias nyias muaj cov yas ua kom huv si. Saib xyuas tshwj xeeb yuav tsum tau them rau xaiv cov nplaum tsim nyog.
