Purity of copper core
The inside of the wire is generally made of pure copper wire, because pure copper has good conductivity and heat dissipation performance. Good wires should have a relatively high purity of copper core, generally using oxygen-free copper, bright appearance, not easy to heat up during use, low resistivity, more energy-saving, and longer life. Poor quality wires have more impurities in the copper core, higher resistivity, easy to generate heat, very power-consuming, shortened service life, and may cause fire due to short circuit.
Look at the material of the insulation layer
The insulation layer is the outer skin of the wire. High-quality wires generally use high-molecular polyvinyl chloride for the outer skin, which has good insulation, high temperature resistance, high strength, good flame retardant effect, and is not easy to deform and fade. The surface is delicate and shiny, with a certain thickness. Poor quality wires use ordinary plastic or recycled plastic for the insulation layer, with a dull surface, thin material, no texture, easy to age and deform at high temperatures, poor insulation, and easy to burn. Such wires are very unsafe.
Comparison of eccentricity
Eccentricity refers to the ratio of the thickness of the insulation layer that causes the copper core to deviate from the center. For good quality wires, the insulation layer is uniform in thickness, the copper core is in the center, and the high voltage is not easy to penetrate the outer skin, avoiding the exposure of the copper core. For bad wires, the insulation layer is uneven in thickness, which makes the copper core deviate seriously from the center. In this way, the high voltage can easily penetrate the outer skin, and the copper wire is exposed, which can easily cause a short circuit and fire, which is very dangerous.
Anti-counterfeiting labels
Many high-quality brand manufacturers will post anti-counterfeiting labels with laser holographic effects on their products to distinguish their high-quality products from counterfeit and shoddy products on the market, so as to facilitate consumer identification. Consumers can easily identify these anti-counterfeiting labels as long as they pay attention to observation when purchasing. Some manufacturers will also print QR codes on the anti-counterfeiting labels. Consumers can distinguish the authenticity by scanning these QR codes. As a leading brand in the field of laser holographic anti-counterfeiting, Huagong Image has deep attainments in the field of holographic QR code anti-counterfeiting labels and can customize anti-counterfeiting solutions for various products.
Withstand temperature changes
During the use of wires, the wires will be affected by heat due to different ambient temperatures or long use time. Good wires should be able to withstand high temperatures and will not deform or age; when the ambient temperature is relatively low, they will not become stiff and brittle, causing the insulation layer to break. After long-term use, poor-quality wires will have high heat, and the insulation layer is prone to deformation or even cracking; when encountering low temperatures, the plastic surface will become stiff and easily broken, resulting in leakage hazards.
Corrosion resistance
Wires are used for a long time, and they cannot avoid contact with air, water, acidic substances, etc. during use, so their corrosion resistance must be good to have a long service life. High-quality wires should have relatively high corrosion resistance, and acid and alkali corrosion will not affect the insulation layer. If poor-quality wires are corroded by acids and alkalis, the insulation layer may break or fall off, causing the copper core to leak out, which is prone to danger. Such wires have a short service life, so it is best not to choose them.
Post time: 2025-05-27
