The wire cable industry is an important supporting industry for my country's economic construction. It is widely used in various fields of the national economy, occupying 1/4 of China's electrical industry, is the second largest industry in the machinery industry after the automobile industry. Among them, the wires used in interior decoration are mainly PVC insulated cables with rated voltages of 450/750V below, Guangxi cables are also called cloth wires.

The assessment of wire quality is mainly carried out by professional inspection agencies. The main technical indicators in the report are as follows:

1. Conductor DC resistance. It directly reflects the current carrying capacity of the wire, that is, how much load it can carry. This indicator is related to conductor material, conductor cross-sectional area (wire gauge), that is, wire diameter.

2. Finished pressure test. The main assessment is whether the outer insulation of the wire has leakage. This indicator is related to the material manufacturing process of the insulation.

3. Insulation (sheath) thickness mechanical properties other items. Mainly assess the service life of the wire the use environment. If the insulation thickness is too thin the core is eccentric, it is easy to be damaged at the thin position during installation use, resulting in leakage. Wires that use poor quality insulation have a short lifespan.