Experts talk about the difference between non-national standard wires and national standard wires.

The previously mentioned non-national standard wires refer to wires that are lower than the national standard, such as wire core diameter, insulation layer thickness and aging resistance. With the state strengthening supervision of products involving personal and property safety, the business license and production license of manufacturers who produce and sell non-national standard unqualified wires are revoked, and the legal person is investigated for criminal responsibility. No manufacturer dares to do this now.

The current non-standard wires refer to cables and wires for special purposes that do not belong to the specifications and performance specified by national standards. However, it should also meet the general requirements in terms of safety and quality performance. The national standard wire is the wire produced in full accordance with the national standard. General household and common wires are of standard specifications and performance, and the national standard wires. For example, the national standard stipulates seven kinds of common specifications and performance, and also stipulates general requirements, but special manufacturers need seven kinds of non-standard ones.