Safety: reinforced security door technology, prevent single inserts, extra large silver alloy contacts, minus the arc. Super wi Description:safety control:1.Adopted Germany Bayer PC bullet-proof plastic for faceplate.2.Double 6 Nylon anti-burning backeseat.3.Anti-tired strong Tin Phosphorus bronze falke4.Big wire-access holes and iron spiral pressed wires.5.Adopted new protection door design for ...