(1) Little flux leakage,the ring is very close,uniform magnetic circuit and
      completely closed,no air gap in the magnetic circuit, therefore,particularly
      small external magnetic flux leakage.
(2) Small losing,low-temperature,high efficiency
      The magnetic induction B value transformer strength is in the design of about
      1.7 T (saturation magnetic induction intensity up to 1.9 T ),less winding turns,
      small internal resistance,thereby reducing the loss of copper and iron and
      improve the efficiency of the transformer,winding Coil around the ring  core,
      so good heat dissipation, low temperature rise.
(3) Strong ability of overload
     Winding due to the resistance of small, quick reaction, when the additional load
     current suddenly increased,the toroidal transformers can quickly upgrade the
     current to ensure the load needs. Especially in the HiFi  stereo equipment,it is
     very suitable to use this kind of toroidal transformer.
(4) Small size, light weight. 
     Winding transformer,not on the core framework,as long as packed insulation,or
     with epoxy resin powder electrostatic spraying,you can direct routing, because
     the magnetic induction intensity B value can be made higher, the size of small 
     core,Use less the copper,compare with the EI transformer can be reduced
     about 30-40 percent.
(5) Low noise, no vibration 
     Because the iron sheet is very tight,no middle joints,electromagnetic are much
     improved after the iron sheet heat treatment,the copper wire roll on the
     insulating iron sheet ,no clearance in interior,so when working the noise  is 
     low and no vibration .
(6) Good Technics
     Free combination according the iron sheet size,no need mould fee,so it is high
     universality of design the roll iron sheet is more simple than the EI,C,R,so
     the cost is low .