The panel adopts high-effective flame-retardant PC engineering plastics (i.e.bulletproof glue). High- effective flame-retardant, thermostable anti-shake resisting fall, the flamereache PC High conductive rate sheet copper. High-quality sheet copper through plate nickel disposed, prevent copper from rusting,and generate light heat, rise low in temperature. Power wire with national standard. Not unusually overheated and use safer. Power switch, Adopt four silver alloy contacts, it is high-effective to bear the Arc and longer to use.