Tag nrho cov lus hais hauv khw muag khoom tau sib xyaw rau lub lim tiam no.Nrog rau qhov hloov pauv ntawm cov khoom siv raw thiab cov qauv ntawm kev ua lag luam yav tom ntej, cov lus hais ntawm qee yam tau nce me ntsis hauv thawj ib nrab ntawm lub lim tiam.Pib zoo li yuav tsum ceev faj, ua ntej tus nqi ntawm cov khoom siv ntau yam hu rov qab.

Ntawm tag nrho, nws cia siab tias tus nqi ntawm kev tsim kho steel yuav hloov pauv mus ntxiv thiab hloov kho lub lim tiam tom ntej, nrog chav me me rau kev hloov pauv.