In daily life, Concertina Razor Wire is a very common equipment to protect the safety of properties and life from damage. It has a beautiful crossing outlook and it is suitable for uses after extending, making an ideal security fencing with great anti-climb and anti-cutting property. A single coil of razor wire or concertina coil is usually fixed to a fence or wall, providing a good isolation and deterrent. Correctional institutions (penitentiaries), government facilities, prison, military sites, airport, farm, police, private security zones, border security, gardens, residences, private properties cannot be without it. Our concertina spiral razor wire is made of 0.5mm thick hot-galvanized steel sheet and 2.5mm thick high-carbon galvanized wire. These coils are compressed for transportation, and then stretched for use. Our Concertina Razor Wire has two formations: spiral formation (unclipped ) and concertina formation (clipped). Each spiral circle is joined by three