It is mainly used in high-rise buildings, underground railways, nuclear power plants and important industrial and mining enterprises and places related to fire safety and fire rescue, such as emergency power supply to indoor fire equipment, fire alarm equipment, signal lights, ventilation and smoke exhaust equipment, emergency elevator power supply lines.

NH-RVS is the full name of refractory polyvinyl stranded flexible wire and cable, commonly known as twisted pair, twist wire, fancy wire, multi-strand flexible wire, flexible wire for twisted connection, etc., and the outside of the wire also increases the insulation layer and protective layer, is a movable cable.

Power line: is the transmission of current wire, by the outer sheath, inner sheath, copper wire composition.

High performance long life wire and cable in the initial investment cost is higher than ordinary halogen-free low smoke flame retardant (refractory) wire and cable, but according to the 50 years of service life of the building, the cable does not have to replace the cable in the service life of the second cost, and ordinary cable service life is only about 30 years, the need to replace the cable twice in the service life of the building, there is no economic comparison. For complex and diverse b

Type WDZ-GYJSYJ (F) cable is commonly known as high life cable. Under normal use of 70-80 years, the production of double-layer co-extrusion technology and irradiation cross-linking process, enhance the mechanical and physical properties of the cable, electrical properties and low-smoke halogen-free performance, extend the service life of the cable.

The main conductor DC resistance, insulation resistance, finished voltage test and voltage test between insulated wire cores, each is very important, conductor resistance directly reflects the electrical transmission performance of the cable, directly affects the temperature,