Hi Friend We are a leading manufacture of abs engineering plastic lockers,Compared with the traditional wood&steel&metal materials,Abs engineering plastic have such advantages:Â 1.All parts are made of 100% raw abs engineering plastic. 2.Non-rust,Waterproof,Anti-corrosion,High stregth,Acid and alkali resistance. 3.13 colors/10 sizes/8 kinds locks for you free combinations. 4.Knock-down structure,easy install just like children stacking wood Products have adopted ISO9001/SGS/CE certificate. And based on our strong ability of production with 10 injection molding machines, we can also ensure you delivery time and best service. Best Regards cathy