Concertina razor wire is the most popular high security fence for military and high-grade residence at present. the reason for surface treatment is to strengthen the strength of anticorrosion and prolong the service life. Galvanized spines, as the name suggests, surface treatment is galvanized, it can be galvanized and hot dip galvanized. The surface of PVC thorns is PVC wrapped, and the wire is black wire, galvanized wire and hot-dip wire.It is also an ideal safety fence with good anti climbing and anti cutting performance.The natural circulation on the wall, simple installation and lower cost can be used for the security fence and isolation of gardens, residences, military sites and other places requiring high security.