Zombini izinto ezinobungozi nezingeyongozi, kubandakanywa ulwelo, umgubo, kunye neegesi, ziyathuthwa kwaye zigcinwe kwizikhongozeli zetanki. Iitanki ze-ISO zenziwe ngensimbi engenasici, i-insulated, kwaye igqunywe kwi-polyurethane okanye i-aluminium yokukhusela. Ngoko ke balukhetho olukhuselekileyo nolukhuselekileyo lokuhambisa uluhlu olubanzi lwezinto.