... necessary for extra protection equipment ,such as fiber protection plate(optical fiber splice tray),optical fiber terminal box,optical fiber distribution frame, after it finished splice fusion ... .25/0.9/3.0mm or 3.0x2 drop cableInsertion lossPC≤0.3dB,UPC≤0.2dB,APC≤0.2dBReturn lossPC≥40dB,UPC≥50dB,APC≥60dBRepeatability<0.1dBInterchangeability<0.2dBWorking ...