A sensitive topic familiar to cable practitioners in recent years: it is too difficult to sell national standards. They all say that their cables are national standards, and non-standard ones also say that their cables are national standards. As a result, they take advantage of the quotation, which once made the practitioners in the cable market very helpless;

What is the real difference between national standard cables and non-standard cables? You can learn more from the following points:

1. Calculate the cost by the weight of copper. It was effective at the beginning, but the national standard ignored a problem. Your copper is an oxygen free rod, but the non-standard is not. When the weight of waste copper and oxygen free rod is the same, the price of waste copper and oxygen free rod is 10% different. Therefore, great efforts were made to publicize the national standard cable, which failed. The minimum guarantee difference between national standard and non-standard was 10%.

2. Cut corners on auxiliary materials. The state has increased the resistance inspection, and also strengthened the inspection of conventional products. Non-standard cables have begun to work on auxiliary materials. If copper accounts for 70% of the cost of cables, the auxiliary material cost accounts for about 20%, which is the cost of 20%. If the materials are slightly inferior, the price can be 5% different from that of the national standard. As you can see, many cables exposed recently have problems with accessories.

3. The wire is short meters to the cable is short meters. In fact, the matter of short rice has always existed, which is the most difficult to check. It used to exist on BV, such as 95m wire, 98m wire, or 90m wire. Now, because the inspection items are increasing, all the inspected products have been included, so non-standard products begin to work in this direction again. I hope you will pay attention to the fact that 100 meters is reduced by 1 meter, and 1% of the profit comes out.

4. Thick on both sides and thin in the middle. In other words, the cables at both ends are national standards, and the middle part is non-standard. Therefore, a lot of costs are saved, and the price of the corresponding cables will be much lower. You can't intercept the test cable from the middle, so the leak was drilled like this.

At present, the fourth worry is that as long as the user and the cable manufacturer hide it together, there is no way to check it. Is it necessary to dig the cable out of the ground for measurement? This is also the reason why it is also called "national standard", but the price varies so much.