Tom qab nkag siab cov ntsiab lus tseem ceeb, cia saib ntawm ntau qhov tseem ceeb ntawm cov khaub ncaws kub kub:
1. huab cua zoo tiv thaiv
Qhov no tseem yog nws lub tswv yim hloov kho tshiab} Vim tias muaj kev puas tsuaj rau hauv ib puag ncig, nws muaj peev xwm maj mam hloov kho lub neej sib sau lub ntuj retro style .
2. kev ua tau zoo
Kev ua cov phiaj kub kub yog qhov zoo, uas yog qhov yooj yim rau cov kev xav tau sib txawv raws li kev tsim kho kom haum raws li cov haujlwm sib txawv.
3.} ntau tus nqi yig
Piv nrog cov phiaj txias-rolled steel lossis lwm cov khaub ncaws tshwj xeeb, cov paib hluav taws xob ua tau zoo heev tuaj yeem ua tiav thaum ua kom tiav thaum ua tau zoo {}}
4.} rich nplua nuj tshuaj
Vim yog qhov tshwj xeeb ntawm cov txheej txheem kub kub, qhov saum npoo ntawm cov ntawv nyeem ntawm kev ntxhib thiab txheej txheem, uas tuaj yeem ua tau zoo ntxiv rau qee qhov tsim kom zoo nkauj rau kev tsim kho kom zoo nkauj.
