It can be directly laid in the computer room and various harsh environments without using protective sleeves, saving space, reducing construction costs, and greatly improving the convenience of network maintenance. The biggest difference between this product and the traditional optical fiber jumper is that it is specially designed and produced a small flexible stainless steel sleeve to protect the optical fiber for the shortcomings of the optical fiber is easy to break and be damaged, and then a flame-retardant PVC coating is added on the outside of the sleeve. , in order to achieve functions such as moisture release and fire prevention. At the same time, we have developed a special manufacturing process and a unique structure to ensure a firm connection between the sleeve and the joint. This unique design makes the construction and wiring of the armored fiber optic jumper simple and convenient, reduces the loss during the construction process, improves the service life of the fiber jumper, and improves the safety and stability of the entire system.