The characteristics of this kind of products are that the optical fibers are fastened on the center of the cable and the reinforced component are put around the circumference. During the process of manufacture, the optical fibers are not influenced by the intertwisting., and the surplus length of the finished cables can be 2 to 3 percent. The products possess excellent properties of transmission and mechanical physics, with the merits of fine diameter, compact construction, light weight, small bulk and low cost etc. They can be used in overhead or piping laying occasions.