Continuous basalt fiber (abbr. CBF) is a continuous fiber made of natural volcanic extrusive rock as the exclusive raw material. After melting at 1450-1500℃, continuous basalt fiber is manufactured by special technology. Basalt fiber is high performance non-metallic inorganic fiber, which has unique excellent properties in tensile strength, high and low temperature resistance, corrosion resistance, heat insulation, sound insulation, flame retardant, chemical resistance and electrical insulation.