The fiber optic splice closure is a key protective device in optical fiber communication, used for sealing and protecting fiber splice points and storing excess fiber. Made of corrosion-resistant materials such as PC and SMC, it provides protection ratings of IP55-IP68 and supports 12-144 core configurations with SC, LC and other interfaces. Featuring easy installation, impact resistance and strong sealing, it withstands harsh environments to ensure stable fiber transmission. It is widely used in communication base stations, data centers, FTTH broadband access and other scenarios, and is a core accessory for the installation and maintenance of fiber optic lines.