1, some irregular manufacturers, insulation layer with recycled PVC, conductor with recycled copper, copper clad aluminum, steel wire or several hybrid. These kinds of conductor internal resistance is very harmful to electronic equipment, so the choice must be careful.

2, the normal wire insulation layer must be made of new anti-oxidation PVC plastic, wire core conductor made of oxygen free copper, tin copper or silver-plated copper, etc., must be made by multiple processes and precision equipment.

3, the quality of the wire not only to insulation, heat resistance, and the conductor core must be used seven strands or woven, so that there is enough density to reduce the value of resistance, capacitance and inductance, output enough current.

4, the pros and cons of the connection line can not only look at the appearance of size, more important is to see the inside of the copper core of the pros and cons of thickness. Because some wires will be made very thick rubber core is very thin, so the main cut surface from the copper core size to confirm.