**Product Specifications:**

**Brand:** SK-LINK

**Type:** Single-mode duplex fiber optic patch cord

**Connector:** LC/FC/SC/ST

**Grade:** Engineering and telecommunication grade

**Features:** Customizable length and various connector types available

**Applications:** Commonly used in fiber optic cabling, terminal boxes, switches (optical modules), fiber optic transceivers, high-density distribution frames, ODF distribution frames, power systems, and carrier-grade distribution frames

**Quality Assurance:** Tested and certified by China Telecom Technology Labs (CTTL), a third-party certification body approved by the State Certification and Accreditation Administration of China (CNAS)

**Ceramic Ferrule:** High-quality ceramic ferrule ensures stable data interchange, high durability, and low insertion loss

**Fiber Core:** High-performance fiber core allows for easy fusion splicing, low light loss, and stable high-speed transmission

**Outer Sheath:** LSZH outer sheath for low smoke and zero halogen emissions, environmentally friendly and corrosion-resistant

**Fiber Protection:** Each fiber end is equipped with a dust cap to prevent damage and ensure product quality

**Wide Compatibility:** Suitable for fiber optic communication rooms, fiber-to-the-home (FTTH), fiber data transmission, fiber CATV, LAN, fiber sensors, optical testing equipment, security monitoring, optical modems/switches, and fiber optic transceivers

**Operating Temperature:** -20°C to 85°C

**Length:** Available in lengths ranging from 1 meter to 50 meters, customizable lengths also available

Please note that the above information is based on the provided content and is subject to verification with the actual product specifications.