Greentel Fiber Optic Splice Closure includes a connector body, a front and rear dust cover, an extrusion sleeve, and the like. The front part uses a ceramic tube with a very light connection surface to ensure the contact of the optical fiber and improve the durability. An elastic sleeve at the rear prevents the fiber from being torn. Fiber optic splice closures are widely used today. It is precisely because of the development of optical fiber communication technology and the coverage of the national network. The requirements for fiber optic splice closures are also gradually increasing. There are also requirements on the length of the reinforcing elements for fiber optic splice closures, and the length of the reinforcing parts is required. Suitably, if the fiber optic splice closure reinforcement is pressed on the core bundle tube, the core bundle tube will be deformed by force and cause excessive loss, and the optical fiber in the core bundle tube will also be fractured due to long-term stress, leaving the project with Hidden danger. The fixing of the optical cable must ensure that the position of the optical fiber in the fiber optic splice closure does not loosen, thereby avoiding the increase of optical fiber loss or the problem of fiber breakage due to the displacement of the optical cable. The fixing of the optical cable is divided into fixing of the reinforcing member and fixing of the rest of the optical cable. The reinforcement must be fixed in its length. It is too long to fit in the fiber optic splice closure; it is too short to fix the cable. Generally, when cutting reinforcements, the distance between the clamping plate of the fixed cable and the screws of the fixed reinforcement should be equal to the length of stay. The rest of the fiber optic cable is fixed after the reinforcements are fastened, tighten the clamping plate with screws, and tightly fix it on the fiber optic cable inlet of the joint box.