Sulfur hexafluoride has a good electrical insulation properties and excellent arc performance. Its electric strength is 2.5 times the nitrogen gas at the same pressure, the breakdown voltage is 2.5 times that of air, the arc extinguishing capability is 100 times that of air, is a new generation of air and oil between the superior EHV dielectric material. Sulfur hexafluoride its good insulating properties and arc performance, such as: circuit breakers, high voltage transformers, gas closed composite capacitors, high voltage transmission lines, transformers and other. Electronic grade high purity sulfur hexafluoride is an ideal electronic etchant, is widely used in microelectronics technology. Refrigeration industry as a refrigerant, the refrigerant can range between -45 ℃ ~ 0 ℃. Electrical industry with its high dielectric strength and excellent arc performance off, used for high-voltage switchgear, high-capacity transformers, high voltage cables and gas insulation. Anti-mining industry as an adsorbent for coal dust in mines replacement oxygen. High purity SF6 also because chemically inert, non-toxic, non-flammable and non-corrosive, is also widely used in metal smelting (such as magnesium alloy melting furnace protective gas), aerospace, medical (X-ray machines, laser machines), weather ( tracer analysis), chemical (senior automotive tires, the new fire extinguishers), etc. With today's technology, the field of SF6 involved continues to expand, more and more areas of the field of basic science and technology is widely used.