Yam Taw Qhia:

Fais Laj Kab Rooj Kov Teeb.
1. Ntev mus txog 5m
2. Lub caij nplooj ntoo hlav yog ua los ntawm kub dipped galvanized hlau lossis galvanized hlau.
3. nrog 2 rooj vag tuav insulators.