Cov khoom siv ua vaj tse precast siv hom kev tsav tsheb ib lub cev muaj zog. Hom kev tsav tsheb no tuaj yeem tshem tawm qhov tshwm sim ntawm kev tso zis tsis sib xws. Yog li ntawd, txawm tias hom kab tsim khoom cement twg los xij, nws tuaj yeem ua kom muaj qhov chaw tsim khoom txaus, thiab cov khoom siv zoo nkauj thiab qhov chaw huv si.
Cov khoom siv ua vaj tse precast siv cov thev naus laus zis European siab heev uas muaj roj da dej puv lubrication ceev txo cov txheej txheem, cov thev naus laus zis no tau txais cov ntawv pov thawj hauv tebchaws. Kev koom ua ke ntawm tag nrho cov qauv, Kev ruaj khov zoo. Cov khoom siv ua vaj tse precast muaj kev sib xyaw ua ke zoo, Kev sib xyaw ua ke zoo heev ntawm cov pob zeb
Qhov Zoo ntawm Cov Khoom Siv Cog Qoob Loo Precast
(1) Zoo zoo
(2) Kev sib npaug siab
(3) Ntau yam kev hloov pauv
Lub sijhawm tshaj tawm: Lub Rau Hli-04-2019
