It should be Yueguang brand copper core cable.
ZR refers to flame retardant YJV refers to associated with polyethylene insulation polyvinyl chloride sheets
1. ZR-indicates flame retardant cables. The flame retardant grades are divided into three types of A, B, and C. Among them, Class A has the highest flame retardant grade. Generally, the ZR that is seen is ZRC; ZRC or ZR is a flame retardant C, ZRB or ZB Category B, ZRA or ZA is a flame-retardant Class A;
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