Peb cov khoom vaj tse feem ntau yog ua los ntawm steel stud thiab fiberglass daim tawv nqaij, uas yog qhov muaj zog tshaj plaws, hloov tau yooj yim, zoo tshaj tus nqi, thiab cov cuab yeej ua tau zoo tshaj plaws hauv kev lag luam. Lawv feem ntau yuav raug siv ua Telecom Shelter, Monitoring Shelter, lossis cov cuab yeej ua ntaub ntawv ruaj ntseg. Cov cuab yeej siv fiberglass muaj qhov ua tau zoo, lawv tuaj yeem kav ntev tshaj 25 xyoo thaum huab cua huab cua.