Toroidal Power Transformer is special designed for power products as AVR, UPS and so on.Our design is according to the principle of the toroidal transformer, adjusting the winging method, controlling the leakage current and on the basis of the customer’s request to design and manufacture. Because of the special closed magnetic circuit, it can enhance the capability and reduce the useless consumption in order to reduce the cost.This is one transformer of our Special Transformer:Power Transformer--Toroidal -Core  for UPS .Besides,we have Waterproof Sealed  Transformer,C-core Power Transformer Used for Elevator Control,Used for R-core Transformer of the profession stereo set.