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In data center and building cabling, safety is critical. Many users ask: What are OFNP, OFNR, LSZH? What do these flame‑retardant grades mean? Which one should I use for plenum, riser, or indoor areas? The flame retardant grades of optical cables can be divided into three types, OFN, OFNR and OFNP. This article explains definitions, standards, performance, and applications to help you choose...
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