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Our security barriers, is in full automatic pull back to the barrier fence. Only three to four razor wire coils will complete the task. Tasks can be completed within five minutes. The maximum length of the fence is 75 meters. No police or military organization to the purpose of security. Instructions for use: 1, Blade razor wire quickly works vehicles to designated locations; open tailgate and the setting up of barriers - The total length of 60 meters 75 meters. Location in too wide riots should be fully blocked with razor wire, more coils can be used to achieve the best control objectives. 2. Withdraw: Rear of the vehicle in front of the car retrogression, razor wire tape / line to go back to the tail of the car automatically without any human help, has been lagging until the return to the place. Action is fast and easy. It is a great and so far mobile security protection barrier. Application: Formation of a security barrier for national defense, control riots and protests, the coastline of the enemy's defense forces, roadblocks accident, and plug the highway construction, or important entry and exits. Product characteristics and advantages: 1. Quick and easy operation. Only three men are needed to be set up and retrieval of the razor wire obstacles, fences, a saving of human resources. 2. Razor wire barrier fencing does not have any mechanical power, electricity, battery, motor, or engine, to prevent possible mechanical problems caused by mechanical failure, battery shortage, the electrical failure, or engine failure. In addition, it is set up to prevent rioters from the fire damage mechanical parts, batteries, etc., eliminating the security issue. 3. Highly mobile. The setting up and the withdrawal can be done in 3 ~ 5 minutes. In addition, the vehicles can be seized any tail of the car. The end of the front-line vehicles and cars can separate this way, the value of the use of vehicles will not be limited to the additional vehicles.