Cov lus piav qhia luv luv:

Kub Muag Tsawg Tus Nqi Hlau vov Ntawv / Corrugated Hlau Vov Ntse Hlau / Kub Dhuav Zinc Hlau Cov ntsiab lus ntawm Kub Muag Tsawg tus nqi hlau vov tsev ntawv / corrugated steel vov tsev ntawv / kub dipped zinc Hlau Thickness 0.12-0.6mm Dav 1000/914/762 (dav ua ntej corrugation) 930/915/910/905/900/880/875/815/810/790/780/680/670/660/655/650 (qhov dav tom qab corrugation) Ditch thiab Ncov tom qab corrugation 12 Ditches / 11 Ncov; 11 Dawv / 10 Ncov; 9 Ditches / 8 Ncov Ntev 1000-12000mm Zinc txheej Z30-275g / s ...