The huge difference in the price of wires is due to the different raw materials used in the production process. The main raw materials for producing wires are electrolytic copper, insulating materials and sheathing materials.
At present, there are many kinds of wires on the market, many specifications, and prices are chaotic. It is very difficult for consumers to choose. In terms of the prices of 2.5 mm2 and 4 mm2 copper wires that are commonly used in home decoration, the price of the same specification may vary by 20% to 30% due to different manufacturers. As for the quality, whether the length is up to standard, consumers are even more difficult to determine.
According to industry sources in the wire industry, the reason why the price difference of wires is huge is due to the different raw materials used in the production process. The main raw materials for producing wires are electrolytic copper, insulating materials and sheathing materials. At present, the raw material market has about 2 million yuan per ton of electrolytic copper, and the recycled copper scrap is only about 15,000 yuan per ton; the high-quality products for insulating materials and sheathing materials cost between 8,000 yuan and 8,500 yuan per ton. The price of only 4,000 yuan to 5,000 yuan per ton, the difference is very large. In addition, the lack of length and inadequate insulation of the insulators also contribute to price differences. The length of each wire is 100 meters, while the defective product is only about 90 meters. The insulation contains 35% to 40% of the rubber, and the defective product is only 15%. By contrast, it is not difficult for consumers to see that the difference in the sales price of finished wire is due to the presence of tricky materials.
So, how to identify the advantages and disadvantages when buying a wire?
One must look. See if there is a quality system certification; see whether the certificate is standardized; see if there is a factory name, site, inspection seal, and production date; see if the trademark is printed on the wire, specifications, voltage, etc. Also look at the cross section of the wire copper core, superior product copper color bright, soft color, otherwise it is defective.
The second is to try. It is advisable that a section of wire be repeatedly bent by hand, and that any product that has a soft hand, a good anti-fatigue strength, a large elasticity of plastic or rubber feel, and no cracks on the wire insulator is an excellent product.
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