... of Ra0.01micromm mirror roller1. Using the original finishing and polishing facilities from US 3M Company, with the highest ... materials, to ensure that the flatness, balance, un-roundness and shaft alignment reach the requirements3. Capable of manufacturing 1,000 mirror ... non-ferrous metal, PVC, ABS, PP, PE, PT, PC and various plastics and garment materials5. The materials all use 45# seamless steel ...