How to identify the different finished network patch cable cat3 cat5 cat5e cat6 cat7 cat8?

Identification and identification of finished network cables: the identification of the third class is CAT3, the identification of the CAT5 Patch Cable, the identification of the cat5e Network Cable and the identification of the CAT6 Ethernet Cable. The category 7 line identifier is CAT7 and the category eight line identifier is CAT8
1. Feel with your hands: high quality wire generally uses copper wire to do the conductor core, which is relatively soft, inferior wire adds other metal elements, which is relatively hard, not easy to bend, and easy to break in use.
2. Look at the color, look at the section, look at the winding: peel the outer skin of the net cable, revealing 4 pairs of intertwining net cable, carefully see whether the color is bright, pay special attention to the green and white line and blue and white line these two lines put together to see if it is easy to distinguish, good line can be seen at a glance, poor line may not be able to distinguish with a knife: Take out plastic outer skin to show core line, white core line is white, fake goods is pure white or design and color is not obvious normally, good net wire winding line density is moderate, the direction is counterclockwise.
3 with fire: with high temperature test, the real wire outside the rubber will not become soft, the real wire outside the glue has flame retardant, and some of the false is not flame retardant.

4. Detection: directly take a multimeter to measure, in the case of such a long distance, the smaller the resistance of the line quality is better.