1 CU 2 high transmission and low noise 3 certification :CE,SGS,ISO9001 4 clear ,no halogen ,low smoke ,without drug 1 the cabels have stranded 4N oxyen free copper as the core conductor,which resists oxidation,ensures high transmission rate and low attenuation2 these cables are perfect for the transmission of both high and low frequency signals.3 the protective jacket is made of quality polyvinyl ...