【8K Fiber Optic HDMI 2.1 Cable】: HDMI 2.1 cables are made of optical fiber material, antiinterference and durable. 【Plenum Rated HDMI Cable】：The 8K Fiber Optic HDMI Cable with durable PVC jacket and strain relief, CMP fire rated cable for walls, floor, ceilings, ducts, conduits.
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