The machine shield inner protection and outer protection of the points. The following protection within the classification to make a brief introduction. Steel plate and stainless steel shield, with a good seal, can prevent iron filings, anti-coolant, anti-tool occasional accident, durable, beautiful appearance and so on. Is used to protect the machine. He can protect the machine surface from corrosion and destruction of the outside world. He has a lot of species. : Organ shields, steel shields, the two rail. Screw on screw shields include: round, square, and polygon. These types of practices. Useful wire braced suture. Shutter shields and armor shields.