With great annual capacity, Tongyang Electronics is one of the largest ei ferrite core manufacturers in the world. As one of Tongyang Electronics's multiple product series, transformer bobbin series enjoy a relatively high recognition in the market. Because we always adhere to the 'quality first', product quality is fully guaranteed. It is frequently used in switch-mode power supplies. With the quality certification of efd20, the efd core is of higher performance than other products. It has a much lower loss than conventional laminated silicon iron transformers.
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