MDC/UPC single-mode fiber patch cords are high-performance optical connections combining mechanical splicing technology with UPC (Ultra Physical Contact) connectors, featuring low return loss, minimal insertion loss, and enhanced signal stability for single-mode fibers (9-micron core). Ideal for long-haul communication, telecom networks, data centers, and fiber-to-the-home (FTTH) applications, they offer durability, interference resistance, and seamless support for high-speed, large-capacity transmission.