A sensitive topic that cable practitioners have been familiar with in recent years: selling the national standard is too difficult, saying that their cables are national standard, and non-standard also claiming that their own cables are national standards. As a result, they have an advantage in quotation. The practitioners in the market are really helpless;

What is the real difference between national standard cables and non-standard cables, you can learn in detail 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 copper is not. When the weight of the copper scrap and the oxygen-free rod is the same, the price of the copper scrap and the oxygen-free rod is different by 10 %. Therefore, the national standard cable has spent great efforts in propaganda, but failed. The national standard and non-standard guarantees are 10% different.

2. Cut corners on auxiliary materials. The country has increased resistance inspections, and at the same time, has also increased inspections for conventional products. Non-standard cables have begun to work hard on accessories. If copper accounts for 70% of the cost of cables, then the cost of accessories takes up about 20%. The cost of 20%, if the materials used are slightly inferior, the price difference with the national standard can be 5%. You have also seen that many cables that have been exposed recently have problems with accessories.

3. Short meters of wires to short meters of cables. In fact, short rice has always existed, this is the most difficult to find. It used to be common on BV, such as 95-meter, 98-meter, or 90-meter noodles. Now, because of the increase in inspection items, the products to be inspected are all included, so non-standard products are beginning to work in this direction again. I hope everyone will pay attention. If 100 meters are reduced by 1 meter, 1% of the profits will come out.

4. Thick on both sides and thin in the middle. In other words, the cables at both ends are national standard, and the middle part is non-standard, so a lot of costs are saved, and the corresponding cable price will be much lower. You can never intercept the cable from the middle, so the leak is drilled like this.

At present, the most worrying is the fourth one. As long as the user unit and the cable manufacturer conceal it together, it is impossible to investigate. Should the cable be dug out from the ground for measurement? This is why it is also said to be a "national standard", but the price is so different.