In key projects in many places, such as fire, monitoring, alarm and other places will use low smoke halogen-free cable, usually people will call it environmental cable, in fact, environmental cable does not mean low smoke halogen-free cable, the following is the difference between environmental cable and low smoke halogen-free cable detailed analysis:

　　1, halogen-free:

　　The use of green insulation, sheath and special oxygen barrier materials, not only has good electrical properties, physical and mechanical properties, and to ensure that the product does not contain halogens, to solve the combustion of the formation of the "secondary pollution", to avoid the traditional PVC wire combustion produces carcinogenic "dioxin" substances.

　　2, high flame retardancy:

　　Eco-friendly cables are fully guaranteed to meet the high fire safety requirements of the building requirements, the cable is not easy to burn in case of fire, and can prevent the spread of flames and the expansion of the disaster after combustion.

　　3, low toxin:

　　Insulation and sheath does not contain lead, cadmium and other heavy metals harmful to humans, in the use of cables and waste disposal will not pollute the soil and water. And after harsh toxicity tests, white rats in the prescribed experimental conditions unharmed.

　　4, does not produce corrosive gases:

　　Adopting the new special coated material which is non-polluting to the environment, it will not produce HCL and other gases during production, use and combustion, and the acid gas emitted is very little, which will cause little damage to the personnel and equipment and instruments, and it is more environmentally friendly in character.

　　5、Waterproof and UV protection:

　　Adopting green environmental protection material with special molecular structure to ensure ultra-low water absorption rate. Special ultraviolet absorber, so that the product has a good anti-ultraviolet function. Ensure the safety of the use of such products, prolong the service life. The first to launch the "environmental cable" name is a Japanese company, which formulated the product standards that FN (Ecomaterial) ecological cable standards, Western countries in the United Kingdom has also formulated advanced environmental cable standards requirements, and then gradually spread to the world.

　　6, high transmittance:

　　The smoke produced when the cable burns is extremely thin, which is conducive to the evacuation of personnel and fire-fighting work. The light transmission rate of the product is more than 40%, which is much higher than the standard of less than 20% light transmission rate of traditional flame retardant cables.