How to distinguish the quality of wire and cable?

1. The uniformity and flexibility of the cable appearance (the surface of high-quality cables is basically very symmetrical and flexible);
2. The tear strength of the cable sheath and insulation is better (except for users who need easy tearing);
3. The brightness, softness, and uniformity of the wire diameter of the conductor are of high quality;
4. The centrality of the conductor in the insulation, without eccentricity, is relatively good;
5. The higher the shielding density, the better the anti-interference;
6. The corresponding outer skin of the engineering installation type cable is tightly sucked (the outer skin of the pipe is not easy to wrinkle, and the integrity is good) The corresponding mechanical equipment and household electrical appliances should be well rounded and have a more important appearance.

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7. High-quality wires and cables are odorless or have only a slight non-pungent smell with the nose. The inferior quality is because too many auxiliary agents are added to low-grade materials and regrind. The smell is pungent and unpleasant.
8. The conductor can be easily pulled out by hand, and the insulation and sheath are strongly bent and the color turns white, indicating that the quality of the plastic is very poor; the insulation is difficult to peel off with a nail, and easy peeling indicates that the grade of the plastic is low.