Product label

Genuine products will have clear product parameter information, product-related certifications, and detailed labels. Pay attention to whether there is a quality system certification. Check whether the certificate is standardized; Wires and cables produced by legal manufacturers have clear handwriting and are not easily scratched. The product comes with a certificate of conformity, which includes the 3C certification mark, certification number, model specification, execution standard, rated voltage, wire length, production date, manufacturer, inspection unit, factory name, address, fixed-line phone number, anti-counterfeiting mark, etc.

2. Insulating materials

The insulating materials of high-quality wires and cables have certain strength, flame retardancy and flexibility, are not easy to tear and have a high ignition point. The insulation layer of inferior wires and cables is prone to peeling off by hand, and their ignition point is low during combustion tests.

3. Conductor materials

From the perspective of conductor materials, it is very easy to distinguish. The core wires of national standard power cords are basically made of oxygen-free copper. The power cord made of oxygen-free copper features low resistance, stable transmission, anti-oxidation and a long service life. Non-standard power line conductors are mostly made of all-copper or copper-plated aluminum, among which all-copper is also known as bronze. Secondary recycled copper contains more impurities, has high oxidation resistance and is less affected by oxidation resistance. However, the oxidation resistance of copper-clad aluminum is relatively low and it is not suitable for long-term use. It also depends on the cross-section of the copper core of the wire. High-quality copper wire has bright and soft colors; otherwise, it is non-standard wire.

4. Length

The traditional power cord is 100 meters per roll, but it can also be customized according to customer requirements. The full length of the national standard power cord shall not differ by more than 0.5 meters. Non-standard power cords are generally within 100 meters. A difference of 8 to 10 meters is normal, so the actual length can be determined through measurement. We can also observe through the online instrument marks, which is also to facilitate customers' measurement and cutting.