the axle of the bin is made of solid steel bar with pure galvanised finish, which is rust-proof and can carry a large amount of rubbish stored in the bin without bending or deforming. the smooth surface of the bin makes it easy for sanitation workers to clean and tidy up, and is also effective in reducing residue when emptying the waste. the waste is made from new materials that inhibit the corrosion of weak acids and alkalis, increasing the lifespan of the bin from a material point of view. the bin is resistant to cold and high temperatures, and can generally be used normally at -30°C and 60°C without deformation.