... , as well as different sizes and shape for choosing, also with the different kind of states ... cast iron floor. It is the floor system for various kinds of containers, injected from PP, ... resistance,anti-aging, In the original package materials for added anti-oxidants, inhibitor, anti-ultraviolet radiation agent ... use high levels of acidic or alkaline disinfectant, also won't be corrosion.4. life span 8--10 ...