... 3.high saturation flux density. 4.ROHS certification EI type transformersPossessing of high permeability,high saturation flux ... of transformers of our main product:EC, EE.EI and PQ type high frequency switch transformerEP type ... 10, 13, 16, 19, 22, 25, 28, 30, 33, 35, 40, 42, 50, 55, 60EF series: EF-4539 ... of transformers of our main product:EC, EE.EI and PQ type high frequency switch transformerEP type ...