1. the appearance of fake and inferior twisted pair is not significantly different from that of genuine twisted pair. Only the font on the rubber skin is slightly small, and the total length of the same number of characters is nearly 1 cm less, so it is easy to identify by means of samples.
2. the color of the core insulation material of genuine twisted pair is bright, with obvious reflection, and the white wire is transparent and copper color; the insulation material of fake and inferior twisted pair is white, and the high reflection point on the true twisted pair body can not be seen under the light and natural light, and it is opaque and green is particularly light.
3. the insulation material of fake and inferior twisted pair is not tightly wrapped with copper core. Only holding the wire head and shaking it can see that the copper core is higher than the insulation layer cut; in the same case, the cut can always be kept even.
4. the insulation material of fake and inferior twisted pair is poor in toughness. The insulator can be pinched by the fingernails of the right thumb and forefinger. The two sides can pull the insulation layer off easily, but it can not be done for the genuine ones.
5. the copper core of fake and inferior twisted pair is smaller than that of genuine copper core, which can be detected in the hand, but also by means of samples.
It seems that the counterfeiter has made a lot of efforts in appearance in order to be able to mix fish and fish. But in order to control the cost and gain more benefits, the internal materials are often insufficient, so it is better to cut a segment to check when purchasing twisted pair.