It's hard to say if you don't know about wires. Nowadays, many fakes can be confused with the real thing. You can tell them from the following aspects.

look

See if there is a quality system certificate; See if the certificate is standardized; See if there is a factory name, address, inspection stamp and production date; See if there are any trademarks, specifications, voltages, etc. Printed on the wire. It also depends on the cross section of the copper core of the wire. The copper core is bright and soft.

attempt

Take the end of a wire and bend it repeatedly by hand. It has soft hand feeling, good fatigue strength, high hand feeling elasticity of plastic or rubber, and no crack on the insulator of the wire.

intercept

Cut off a section of insulation layer, and the wire core is located in the center of insulation layer.

Length and core thickness

Be sure to see if its length and core thickness have been tampered with. According to relevant standards, the error of wire length shall not exceed 5%, and the error of section diameter shall not exceed 0.02%.

anti-counterfeit label

Its home improvement and environmental protection products all have anti-counterfeiting labels, which can be inquired.