The drop cable (or FTTH drop cable) is an optical cable used in the user lead-in section of the fiber-to-the-home FTTH network. It is also suitable for the drop segment of other fiber access networks such as fiber-to-the-office (FTTO. The drop cable (or FTTH drop cable) is an optical cable used in the user lead-in section of the fiber-to-the-home FTTH network. It is also suitable for the drop segment of other fiber access networks such as fiber-to-the-office (FTTO) and fiber-to-the-building (FTTB). The structure of the lead-in cable is to place the optical fiber unit in the cent. Drop cables have the following features and benefits: (1) Low-smoke, halogen-free (LSZH) sheath (2) Simple structure, light weight and strong practicability (3) Two parallel strengthening cores make the cable have good compressive performance (4) The addition of a single steel wire to strengthen the core makes the optical cable have good tensile pr. The main types of drop cables include indoor drop cables (GJXFH, GJXH, GJXKH), outdoor self-supporting drop cables (GJYXCH, GJYXFCH, GJYXKCH), flat drop cables, and round drop cables. Indoor FTTH indoor lead-in cables (GJXFH, GJXH, GJXKH) adopt a butterfly-shaped flat structure, place the optical fiber unit in the center of the cable, place two par. Drop cables are used in the following applications: (1) Access to the network (2) Use end-user direct wiring (3) FTTH indoor wiring and distribution (4) FTTX (5) Office building (6) Computer room, cable TV, closed-circuit TV (7) Indoor and outdoor (8) Long-distance and local trunk lines (9) Computer network system, telecommunications, backbone (10).