Professional tools should be used when stripping the coating layer of the optical fiber. The most typical tool is the Fiber Stripper; it can thin the plastic outer layer outside the pigtail, and it can also strip the coating layer of the optical fiber. Pay attention to: 1. When peeling off the coating layer of the optical fiber, there should be no impurities in the small holes of the fiber stripper. If there are impurities, they should be removed in time. 2. When stripping the coating layer of the fiber, the fiber stripper and the optical fiber should maintain a vertical state of about 90 degrees; 3. Appropriately faster when peeling off. 4. Miller pliers can be repaired, there is a screw. Feel the diameter of the pliers mouth by adjusting the height. 5. If you break the card with one card, it means that the 0.25 protective layer of the opening is small, and you can adjust it a little larger. Adjust little by little and try slowly.