First look: Check whether the wire and cable product has a quality system certification, whether the certificate is standardized, whether there is a factory name, factory address, inspection seal, production date, whether there is a trademark, Specifications, voltage, etc. It also depends on the cross-section of the copper core of the wire and cable sold. The high-quality copper is bright and soft in color, otherwise it is a defective product.

Second test: You can take a piece of wire and bend it repeatedly by hand. If it feels soft, has good fatigue resistance, plastic or rubber feels elastic and has no cracks in the wire insulator, it is a high-quality product.

Three weights: Good quality wires and cables generally weigh within the specified weight range per 100m. Poor quality wires have insufficient weight, are either not long enough, or have too many impurities in the copper core of the wire.

Four price comparisons: Due to the low production cost of fake and inferior wires, vendors often sell them at low prices under the guise of low price and high quality, which deceives people.

Five things to look at for copper material: The copper core of fake copper core wires is purple-black, yellowish or white, with many impurities, poor mechanical strength, and poor toughness. It will break with a little force, and the wires often have There is a disconnection phenomenon.

Sixth quality inspection: In the case of differences in cable quality, it can be sent to a third-party testing agency for testing. Based on whether the authoritative test report is qualified.