Professional grade - can be used with SC-FC single-mode or multi-mode fiber patch cord cables to connect two single-mode SC/FC cords together, or for ST panels. Our fiber couplers and adapters are ideal for any single mode, simple or duplex application Good isolation effect: the metal body can effectively avoid damage, effectively suppress the noise of the grounding circuit, eliminate the ground interference, completely isolate the signal field from the main control terminal on the electrical apparatus, and avoid accidental damage to the main control system Strong optical performance and mechanical stability - The advanced grinding equipment ensures the center grinding deviation of the optical fiber. The high temperature, acid and alkali resistant and ultra-high hardness oxide sheath is us