Its fire retardant low smoke
(ZHLS) :- Zero Helogen Low Smoke. (FRLS) :- Fire Retardant Low Smoke.
Any of this is the meaning of FRLS I written them all down because Im not sure what kind of FRLS are you really looking for: Flame Retardant Low Smoke Free Republic of Landreich Ship Fast Recursive Least Square (biomedical engineering)
FR --> Fire Retardant FRLS-->Fire Retardant low smoke When ever wire gets fire Fr wire emit more smoke where as FRLS wire emits low smoke than the FR wires...
This is the only question you've asked, and it has been answered.
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