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The national standard power cord has a relatively good quality assurance, allowing consumers to use it with confidence. However, in my country's power cord market, it is very difficult to choose a good national standard power cord. Because there are many non-national standard lines on the market, far more than national standard lines, which interferes with people's choices. So how can the national standard line be selected among the many non-national standards?

　　 1. Take a look

　　 You can see the various packaging and information of the power cord. Generally, the authentic national standard line has very detailed information. It not only marked the quality certification of the product, but also the name, address, telephone number and so on of the manufacturer. With only detailed information, you can use this information to find the corresponding manufacturer.

　　 In addition to looking at this information, you can also look at the wire of the power cord. Generally, the conductor of the power cord is made of copper wire. As long as the copper wire is exposed, consumers can look at the color of the copper wire to identify a good power cord. Generally good copper wire should display purple-red color, shiny, and soft hand. On the contrary, the shoddy copper wire will show the color of purple and black, and there are more impurities and the gloss is not good. In addition, as long as people use force to break, they may be broken.

　　 2. Measure one measure

　　 Once the amount is measured, you can make a fuss about its length and weight. Generally, the length of the national standard wire is 100±0.5 meters/roll, and the non-national standard wire is 60-75 meters/roll. If they are rolled together, it is difficult to see how long they are. As long as you measure it, you can easily know its length.

The reason why 　　 weight has become a way to distinguish is because the materials used are different, and the weight displayed is also different. Generally, the material of metal wire is better, so its quality is specified, and it only fluctuates nearby. However, the power cord made of poor material fluctuates greatly and may not meet the requirements at all.

　　 If the above two methods can be applied, then consumers can find a good national standard power cord.

Article from: http://www.elejintao.com/newsd-nid-66.html