What is the standard wire type for fiber optic patch cords in China

In China, the standard fiber optic patch cords typically use single-mode OS2 fiber with LC or SC connectors and LSZH or PVC jackets for indoor applications.Fiber TypeThe most commonly used fiber for patch cords in China is single-mode fiber (OS2), which is suitable for long-distance and high-speed backbone connections, including data centers, telecom networks, and FTTH deployments. Multimode fibers (OM3, OM4, OM5) are also used for short-distance, high-speed intra-data center links, with OM3/OM4 being aqua or violet and OM5 lime green for wideband applications .Connector TypeLC and SC connectors are the most widely adopted in China. LC connectors are preferred in high-density environments such as modern data centers due to their small form factor, while SC connectors are common in FTTH and CATV networks. Other connectors like ST, FC, MPO/MTP, and E2000 are used in specialized applications, but LC and SC dominate standard deployments .Cable ConfigurationPatch cords are typically duplex for bidirectional communication, though simplex cords are used for unidirectional links. Duplex cords are standard in Ethernet, PON, and other network links requiring simultaneous transmit and receive channels .Jacket MaterialFor indoor installations, LSZH (Low Smoke Zero Halogen) jackets are preferred due to fire safety regulations, while PVC jackets are also common for basic indoor use. For vertical shafts or plenum spaces, OFNR (Riser) or OFNP (Plenum) rated jackets may be required. Outdoor or drop cables may use armored or UV-resistant jackets depending on environmental exposure .SummaryFiber: Single-mode OS2 (long-distance/backbone), Multimode OM3/OM4/OM5 (short-distance/data center)Connector: LC (high-density), SC (FTTH/CATV), others for specialized useConfiguration: Duplex (standard), Simplex (specific applications)Jacket: LSZH (fire-safe), PVC (basic indoor), OFNR/OFNP (vertical shafts/plenum), armored for outdoor This combination of single-mode OS2 fiber, LC/SC connectors, duplex configuration, and LSZH or PVC jackets represents the standard and most widely used fiber optic patch cord type in China for both enterprise and telecom networks .