1. Buy household electrical wiring in china shall be identified with the "CCC" certification mark. Because of their close relationship with the lives of consumers, the quality and safety of Buy household electrical wiring in china will directly affect the personal and property safety of consumers. Therefore, wire and cable products are the products with national compulsory safety certification. All household electrical wiring manufacturers must obtain the "CCC" certification from the China Electrotechnical Product Certification Commission and the "CCC" certification mark, "CCC" certification mark on the certificate or product

2. The national standard for the insulation layer of Buy household electrical wiring in china stipulates that the uniformity of the insulation layer of electric wires should be thin, and the average thickness should have clear data. The thickness of the insulation layer of regular electric wires should be uniform, not biased, and tightly wrapped on the conductor

3. The wire core of Buy household electrical wiring in china is made of pure copper raw materials and has been strictly drawn, annealed (softened) and twisted. The surface of the wire core should be bright, smooth, burr free, and tightly twisted. It is flat, soft, flexible, and not easy to break. You can ask the seller to cut a broken end to see the material of the copper core

4. The appearance of Buy household electrical wiring in china is smooth and round, and the color is even. In order to improve the product quality and ensure that the products meet the requirements of national standards, Buy household electrical wiring in china are strictly controlled in terms of raw material selection, production equipment, production process, etc. Therefore, the appearance of the produced wire and cable products meets the requirements of standards: smooth and round, and the color is even

5. Buy household electrical wiring in china conductors have luster, DC resistance conductor structure size and other wire and cable products that meet the requirements of national standards and meet the requirements of national standards. Both aluminum conductor and copper conductor are bright and free of oil contamination, so the DC resistance of conductor completely meets the national standards, with good conductivity and high safety