1. Car magic caly is made from supen thin fiber and solid sols after repeated secret refining, which is fine and sticky. 2. Fine: After wiped repeatedly by worker, it can seep into the oxidized blackspot. 3. Sticky: After wiped repeatedly by worker, it can eliminate the native oxide, incrustation scale, animal wastes, iron scurf( excluding the rust on the surface of metal), acid rain, myron and residue caused by wrong maintenance.