... made from high anti-corrosive material, such as hot galvanized steel Lifespan:4-5yearsCharacteristics:long durability,good corrosion resistance ... effects. Surface treatment:we think the hot-galvanized is better,because according to you environment,in a ... should be 3 meters. Category: 1) Hot-dipped galvanized cage,electro galvanized shelf2) The cage and shelf are all Hot-dipped ...