... ,ISO 3. service in patience 4.deliver fast Rubber wire (flexible copper rubber insulation wire)(GB5013-1997, JB)(GB5013-1997, JB8735-1998)1 ... . ) rated voltage:300/300V,300/500V,450/750V*pvc as insulation material ,pvc as jacket,we call VVcable ( inflame retardant,fire ... .6/1KV) and medium voltage(6/10kv---35KV).*rubber as insulation material and rubber as jacket material (like welding cable, waterproof ...