In daily life, Concertina Razor Wire is widely used to protect property and life from damage. It is one important type of razor wire.Zhengyang Concertina Razor Wire is made by stainless steel sheets and galvanized high tensile claps which has the corrosion resistance, aging resistance, sunshine resistance and weather resistance. It is extended to form a barrier that on one can invade like a concertina. Concertina Razor Wire has two formations: spiral formation (unclipped) and concertina formation (clipped). Each spiral circle is joined by three, five or seven rows of connector clips, depending on the diameter of the circle. This condenses the spacing of the spirals. Its hard material and a deterrent appearance with cost-effective price make it popular all over the world. Besides,it is usually installed with high security fence to enforce the secure ability, which is like the barbed wire. Correctional institutions (penitentiaries), government facilities, prison, military sites, airport.