1. Ua tib zoo saib xyuas qhov chaw vuam: Yog tias lub rooj zaum folding yog cov qauv steel, xyuam xim rau qhov chaw vuam kom du thiab tsis muaj voids, thiab txheej yuav tsum zoo ib yam thiab mos.
2. Ua tib zoo saib xyuas qhov tuab ntawm cov yeeb nkab steel: Yog tias lub rooj zaum folding yog ua los ntawm txhuas alloy yeeb nkab, lub thickness ntawm cov yeeb nkab steel yog li 1.2 hli, thiab nws yog qhov zoo dua kom tsis muaj impurities.
3. Ua tib zoo saib xyuas qhov kev ruaj khov: nyob ntawm qhov zoo ntawm tus ncej, koj tuaj yeem siv ob txhais tes los co cov khoom rov qab, sab laug thiab sab xis, thiab co nws.
4. Ua tib zoo saib xyuas qhov zoo ntawm cov ntaub qhwv: yuav cov tawv nqaij, koj tuaj yeem pinch ib qho chaw nrog ob lub ntiv tes thiab rub thiab rub, nws xav tias muaj zog, thiab kev kho kom zoo yog qhov zoo.
5. Sim zaum: sim zaum rau koj tus kheej kom nkag siab txog nws qib kev nplij siab, hloov txhua lub kaum sab xis, thiab mam li yuav nws tom qab lees paub.