Kev sib txuas lus ntau yam khoom lag luam:
1. Lub ntsiab pas nrig: tib-raj alloy steel tivthaiv
2. Lub hau npog sab nraud: FRP khoom
3, cov tsos mob kho: kub-dip galvanized xim, du thiab zoo nkauj nto, zoo ib yam
4. Siv rau qhov chaw: tsev so, chaw ua si, tej kev lag luam, xwm fab xwm meem, kwj ha, chaw nres tsheb, chaw nyob siab, thiab lwm yam, kom zoo nkauj rau ib puag ncig.
Kev sib txuas lus ntauwd khoom nta:
1. Cov qauv duab zoo nkauj thiab ntau yam qauv;
2, muaj zog cua tsis kam, tuaj yeem tiv taus 12 cua;







