The garments is with some extent of electrical isolation, made of electrical conductive materials and fibers. It is used in the electrical industry and operations. When the electrician is exposed to the high voltage  of 500KV or below, the garments can form a equal-potential isolation surface on the wearer outside. This will protect the electrician against the harm from the high-voltage electro field and electromagnetic wave. It is evaluated by APTV value. The Cotton-Nylon flame retardant fabric is a good choice. It passed the standards of NFPA2112,NFPA70E. The APTV value of the fabric weight at 7ozcan reach at HRC2 8cal.