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• Optical digital audio cable-- the light beam is highly focused, which greatly reduces the reflection of the light beam on the inner wall of the fiber, thus shortening the transmission stroke. Audio optical cable-- the woven net brings better protection to the wire, scratch-proof, pressure-proof, wear-proof and shock-proof, making the wire more durable, easy and simple to store the wire. Optical cable for tv-- the light beam is highly focused, which greatly reduces the reflection of the light beam on the inner wall of the fiber, thus shortening the transmission . Digital optical audio cable-- square interface, wire diameter 4mm, high grade fiber guide, smooth transmission, physical insulation layer to avoid external signal interference. Tv optical audio cable-- square interface, wire diameter 4mm, high grade fiber guide, smooth transmission, physical insulation layer to avoid external signal interference.