it was made of hot-dipped expanded plated; the mesh is shaped by the machine. first it was cut, pounded the mesh hole, and then leaves the muscle after rolling. meanwhile, stretching the middle partial material. so that it can shaped the stretched metal wire mesh. the wire mesh is a kind of permanent pamphlet. it was made of mesh hole and the muscle of the ‘u’ shaped section. it can save the constructed concrete and shaped the caking surface with the constructed concrete. the surface can cement with new constructed concrete without any processing. it is mainly used in constructing and suturing constructed concrete.