... (SF6)It is a colorless, tasteless, odorless, non-toxic, non- burning gas with very good stability, heat resistance, excellent electrical ... photoelectricity industy ect.It is a good cleaning gas and etching gas for plasma process.---------------------------------------------PURITY 99.99% 99.999 ... for X on the medical treatment-shoot the insulated gas of wire device;(5)It is more available than ...