Why there are cases for big price difference on the same model of cable?

The main reasons for the large price difference of wires and cables of the same model and specification include the following aspects:

‌1. Raw material cost difference ‌: National standard cables usually use oxygen-free copper as raw material, while non-standard cables may use scrap copper. Although scrap copper and oxygen-free copper have the same weight, the price difference is 10%. Since copper accounts for most of the cost of cable raw materials, this raw material difference is particularly evident in price ‌

2. Auxiliary material quality difference ‌: Non-standard cables may cheat on auxiliary materials and use materials of slightly lower quality. Although the cost of auxiliary materials only accounts for about 20% of the cost of cables, if poor quality auxiliary materials are used, a 5% price difference can be generated with national standard cables .

3. Wire length problem ‌: Non-standard cables may have a short meter phenomenon, that is, the actual length is less than the nominal length. For example, a 100-meter line may only have 99 meters. Although the number of meters reduced each time is not much, the cumulative cost can be significantly reduced ‌

4. Structural differences‌: Some non-standard cables make a fuss about the structure, using national standard materials at both ends and non-standard materials in the middle. Although this practice reduces costs, it may affect the quality and performance of the cable. Since samples are usually not cut from the middle during testing, this practice has a certain degree of concealment‌
 

‌How to identify high-quality wires and cables‌:

‌Check the composition of copper‌: High-quality wires and cables should use oxygen-free copper, not scrap copper. The quality can be judged by observing the color and luster of copper.
‌Check the quality of auxiliary materials‌: High-quality wires and cables should use auxiliary materials that meet the standards and avoid using inferior materials.
‌Measure the length of the wire‌: Make sure that the actual length of the wire meets the nominal length to avoid short meters.
‌Check the structure‌: Pay attention to whether there is any trick in the structure of the wire to ensure that the overall quality meets the national standard requirements.