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Common sense of choose and buy

Check the CCC certification mark. Cable products, therefore, is a national mandatory product safety certification, all production enterprise must obtain the Chinese electrical product certification board certification "CCC" certification, won the "CCC" certification marks, and on the certificate of approval or product "CCC" certification marks.

Watch the inspection report. Cable as affect personal and property safety of the product, has been listed as key government supervision and inspection, regular manufacturers according to the periodic supervision department to accept inspections. Therefore, the seller should be able to provide the inspection report of the quality inspection department, otherwise, the quality of the cable product is not good or bad.

Focus on packaging. Wire and cable products packaging and other products, all products meet the requirements of the national standard of large and medium-sized regular enterprise, production of the cable is very pay attention to product packaging. Pay attention to the packaging should be fine, the printing should be clear, the type specification, the name of the factory, the site of the factory is complete.

Look outward, the product looks smooth and round, the color is even. Products meet the requirements of the national standard cable enterprises, in order to improve the quality of products, ensure that products meet the national standard requirements, the raw materials, production equipment and production technology of choose and buy strictly controlled. Therefore, the product appearance of the cable product of production meets the standard requirement: smooth round, the colour and lustre is even. The appearance of the fake cable is rough and dull. For the rubber insulated soft cable, it is required to have a round shape, the sheath, the insulation and the conductor are not easily removed. And fake inferior product appearance is rough, elliptical is big, protect the insulation strength is low, can tear off with the hand.

See conductors, conductors have luster, dc resistance, conductor structure size and so on meet national standard requirements. To meet the requirements of national standard of wire and cable products, aluminum conductor, or copper conductors are light, no pollution, thus the dc resistance of conductors in full compliance with national standards, has the good electrical conductivity, high safety.

Measure the length of the cable. Length is the main intuitive way to distinguish between the national standard and the fake products. When the choose and buy, must not covet is cheap, 90 m or 80 m of choose and buy, not even the length of the wire and cable identification, length must conform to the requirements of the 100 + / - 0.5 m standard, namely on the basis of 100 meters, margin of error of 0.5 meters).