A, in the selection of products that meet the requirements of the specification as far as possible, wire and cable in our country is attributed to the national forced safety certification goods, all production companies need to obtain China's electrical commodity certification Committee certification "CCC" symbol, and marked with "CCC" certification symbol on the commodity and certificate. Export products should pay attention to the United States UL regulations and the EU environmental protection RoHS requirements.

In terms of function and specification, it is not a simple thing to choose the right one for your request among the chaotic and hundreds of electronic lines. But from the actual experience is not difficult, can be summed up in two steps, the first, learn from peers, learn from peers, you can first launch the product. Second, constantly optimize the practices of your peers, so that your selection of goods is more suitable for you regardless of cost, function and environmental requirements.

Third, the appearance of the product is smooth and round, uniform color. Wire and cable companies whose goods meet the requirements of national norms, in order to improve the quality of goods and ensure that the goods meet the requirements of national norms, strictly check the purchase of original materials, production equipment, production technology and other aspects. Therefore, the appearance of the wire and cable products produced meet the requirements of the specification: lubrication and round, uniform color. The appearance of the goods posing as defective is rough and dull. As for rubber insulated flexible cables, the appearance is rounded, and the sheath, insulation and conductor are tight and not easy to peel off. The appearance of the fake defective goods is rough, the ellipticity is large, the sheath insulation strength is low, and it can be torn off by hand.

Four, the conductor is shiny, the DC resistance, the conductor structure scale, etc., meet the requirements of national specifications. The products of wire and cable that meet the requirements of the national code, whether it is aluminum data conductor or copper data conductor, are comparatively bright and without oil pollution, so the DC resistance of the conductor is fully in line with the national code.