Through UL certification, Registration No.: e351034, it can provide u certificate, SGS environmental protection report and ROHS environmental protection report. Standard: 610 M / roll, 305 M / roll, special packaging 6000 m / shaft( Rubber shaft (calculated separately). Environmental protection tinned copper is adopted, with tight stranding, low heating and good conductivity. Environmental friendly FEP fluoroplastics, high and low temperature resistance, aging resistance, corrosion resistance, oil resistance, strong acid, strong alkali and extinguished immediately after leaving open fire. Excellent electrical insulation, high voltage, low high frequency loss and long service life.